Hi,
I have many of the same events occuring on different days. My problem is that people will register for more than one day, taking available spots from others. They do this so if they can't make it on one day, they can show up on another. Is there a way to get the registrants to only be able to register for one event only?
No, you can't restrict a user to only register for one event. The only way to do this would be to create these options all as ONE event and use selection fields for the user to pick which ONE date they want to attend. Using selection limits, you can keep more than one person from choosing each slot. And if the field is a dropdown or a radio button, then the user will only be able to choose one slot. Just an option to consider.