The more information the better when you are setting up your event, and if there are questions you get asked a lot, here is where to put them!
You can find event FAQs under 'Services', 'Listings', then 'Manage' on the event you want to add a checkout prompt to.
On the 'FAQs' tile, press 'Edit FAQs'.
Write in your common questions and their answers, then press 'Save Changes'.
Here is how the FAQs look on your booking page above the booking options: