The ease in which you can create custom fields is very useful. I like being able to keep track of who RSVPs, who hasn't yet RSVPed, and what time they're registered for an event. There's nothing that I dislike about this platform. It takes some getting used to, but it's definitely worth the effort! We use ZKipster to keep track of our event participants' RSVPs and preferences. This makes it easy to send out reminders via email and text messages. And we've also been able to keep track of who's participating in our events.