If you don't have a set menu for guests to choose from, or simply want to know if there are any allergies or sensitivities you should be aware of, we recommend using RSVPify's custom question feature to ask guests if they have any dietary restrictions.
Go to Setup > Form Builder
Drag & Drop a Custom Question block into the form
For the best possible collection and display of data we recommend the following setup:
The chosen Custom Question type should be single-line text
Set the question to be asked to each attendee
Leave the question optional (making it required would force guests without dietary restrictions to respond to it)
The setup will look something like this: