How do I limit the number of entries for an event reservation

To my understanding, you would like to limit the number of submission to your form, is that correct?

I suggest you check the information in the guide below to limit the number of submissions allowed in your form.

https://www.jotform.com/help/137-How-to-limit-submissions-in-a-form

Or, if you want to limit the number of times a respondent can submit your form, I suggest you check the guide below.

https://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form

If, in any case, I have misunderstood your concern, please feel free to get back to us and provide us more information regarding your concern.

Thank you.