One feature that is entirely new to the LiveWhale calendar system that we have never had before was the ability to create RSVP lists directly within a calendar event. While we have never had the need for such an event within Marketing and Communications, other colleges were quite interested in the feature when we were evaluating calenadaring products.
The RSVP list is quite easy to set up. When you create an event, one of the options on the web page will be to add an RSVP form to the event. If you do select that option, it will then let you choose how many people to allow on the list, give you the option of having a waiting list once that fills up, allowing you to add information for a custom message to registrants, and many other options. You can also choose to get an email notification whenever someone registers.
I have already had questions about whether this is compatible with other campus systems. As of right now there is no interactivity, but this is something that we can explore as a second phase addition.