Using Custom RSVP Questions to Collect Dietary Preferences, T-Shirt Sizes, and More

Your guest confirmed they are coming. Great. Now you need to know if they are vegetarian, what size t-shirt they wear, whether they need wheelchair access, and if they are arriving Friday night or Saturday morning. Do you send a follow-up email? Create a separate Google Form? Hope they mention it on their own?

None of those options are good. Follow-up emails get ignored. Separate forms fragment your data. And hoping is not a strategy. The solution is to collect everything you need at the moment of RSVP, when the guest is already engaged and willing to share information. Custom RSVP questions let you do exactly that.

Why Collecting Information at RSVP Time Matters

There is a narrow window when a guest is most willing to give you information: right when they are confirming attendance. They are already on your event page, already interacting with the form, and already thinking about the event. Adding a few relevant questions at this point feels natural, not intrusive.

Try to collect that same information a week later via a separate email and your response rate will drop significantly. People are busy, inboxes are crowded, and a standalone data-collection email feels like homework. By the time you chase down the stragglers, you have wasted hours and still have incomplete data.

Collecting information at RSVP time also gives you the maximum lead time for planning. If you know on day one that 22 of your 80 guests have dietary restrictions, you can work with your caterer early instead of scrambling three days before the event.

What to Ask (and What Not To)

The golden rule of custom RSVP questions is this: only ask for information you will actually use. Every additional field increases the chance that a guest abandons the form before completing their RSVP. Three to five custom questions is the sweet spot for most events.

High-Value Questions for Common Event Types

Here are the most frequently needed custom fields, organized by what they help you plan.

Food and Beverage

• Dietary restrictions. A dropdown or checkbox list covering vegetarian, vegan, gluten-free, kosher, halal, nut allergy, and a free-text "other" field catches the vast majority of needs. This is the single most common custom question for in-person events.
• Meal choice. For plated dinners, let guests select their entree: chicken, fish, vegetarian, etc. This gives your caterer exact counts instead of estimates.
• Alcohol preference. For events with a bar, knowing the split between beer, wine, cocktails, and non-alcoholic helps you order the right quantities.

Apparel and Materials

• T-shirt size. Conferences, charity runs, team retreats, and volunteer days frequently distribute branded shirts. Collecting sizes at RSVP time prevents the inevitable pile of unwanted XL shirts that no one claims.
• Name badge preference. Some guests go by a nickname or prefer specific pronouns displayed on their badge. A simple text field handles this gracefully.

Logistics and Access

• Accessibility needs. Wheelchair access, hearing assistance, sign language interpretation, or other accommodations. Frame this as an open text field so guests can describe what they need in their own words.
• Travel arrangements. For multi-day events: arrival date, departure date, whether they need hotel recommendations, and airport shuttle preferences.
• Parking needs. A simple yes/no question about whether they will drive saves you from over- or under-booking parking passes.

Event Content and Preferences

• Session or track selection. For events with multiple concurrent sessions, let attendees indicate their preferences during RSVP. This helps you allocate rooms and materials based on actual demand rather than guesses.
• Experience level. For workshops, knowing whether participants are beginners, intermediate, or advanced lets facilitators tailor their content.
• Topics of interest. A checkbox list of potential discussion topics helps you prioritize the agenda based on what your audience actually wants.

Questions to Avoid

Not every piece of information belongs on your RSVP form. Here is what to leave off:

• Anything you will not act on. If you ask for a phone number but never plan to text attendees, do not ask. Unnecessary fields erode trust and slow down the RSVP process.
• Sensitive personal information. Unless your event specifically requires it (such as a background check for a secured facility), avoid asking for dates of birth, government IDs, or financial details on an RSVP form.
• Questions better suited for post-event surveys. Feedback about expectations, satisfaction predictions, or marketing attribution questions belong in a follow-up, not the RSVP.
• Redundant questions. If you are already collecting email addresses as part of the RSVP (which most tools do by default), do not add a separate "email address" custom question.

Real-World Scenarios

Here is how custom RSVP questions look in practice across different event types.

Company Team Retreat

You are organizing a two-day offsite for 45 employees. Your RSVP form includes:

1. Dietary restrictions (checkbox: vegetarian, vegan, gluten-free, nut allergy, other)
2. T-shirt size (dropdown: XS through 3XL)
3. Arrival date (dropdown: Thursday evening or Friday morning)
4. Activity preference (checkbox: hiking group, kayaking group, cooking class)

Four questions. Every answer directly informs a planning decision. Your caterer gets exact counts. Your swag vendor gets size breakdowns. Your activity coordinators know group sizes. All collected in the same 30 seconds it took the employee to click "yes."

Charity 5K Run

You are hosting a community fun run with 200 spots. Your RSVP form includes:

1. T-shirt size (dropdown)
2. Emergency contact name and phone (two text fields)
3. Have you participated in a 5K before? (dropdown: yes / no / this is my first one)

The emergency contact is a safety requirement. The experience question helps you tailor pre-race communications -- first-timers might appreciate a "what to expect" email that veterans do not need.

Product Launch Party

You are inviting 60 clients and partners to a product reveal. Your RSVP form includes:

1. Company name (text field)
2. Dietary restrictions (checkbox)
3. Would you like a one-on-one demo during the event? (yes / no)

The company name helps your team prepare personalized talking points. The demo request lets you schedule staff and equipment accordingly. These are questions that look simple on the form but save hours of coordination behind the scenes.

How Custom Questions Improve the Guest Experience

Custom RSVP questions are not just a data collection tool for organizers. They signal to your guests that you care about their experience. When someone sees a question about accessibility needs or dietary restrictions, the unspoken message is: "We are thinking about you specifically, not just filling seats."

This matters for corporate events where attendee satisfaction reflects on your organization, for community events where inclusivity builds trust, and for personal celebrations where guests want to feel welcomed. A thoughtful RSVP form sets the tone for the event itself.

Pairing your RSVP page with a link-in-bio page that consolidates your event link alongside other relevant resources -- such as a venue map, agenda PDF, or sponsor page -- gives guests a single hub for everything they need before and during the event.

Collect What You Need, When It Matters

The best time to ask a guest for information is the moment they are saying yes. Custom RSVP questions turn a simple attendance confirmation into a comprehensive data collection step that powers every downstream planning decision -- from catering to swag to room assignments.

Keep your questions relevant, your form short, and your question types matched to the data you need. Three to five well-chosen questions will give you more useful information than a 20-field survey that nobody completes.

Build your RSVP page with custom questions on super business tools and stop chasing guests for the details you should have collected on day one.