Do you need every registration question?
Registration forms tend to grow over time.
A question gets added for one event. Another gets added because someone might need the information. A few more stay because they have always been there.
Before long, attendees are answering questions no one is actually using.
If the answer changes a meal, activity, communication, accessibility need, travel plan, room assignment, reporting requirement, or some other part of the attendee experience, the question probably has a purpose.
If the answer is simply being collected and stored, it may be worth asking whether the question needs to be there at all.
Every unnecessary question adds a little more friction.
You do not need to rebuild the entire registration form. Just review each question and make sure the answer has somewhere to go.