Thanks for the suggestion! The part I need to add fields to though is the registration form when signing up. The location I find for the current fields is in Modules > Events > Classes > Event Attendee. This contains the current form fields as far as I can tell and when someone registers for an event it gets added into that module as well.
I am attempting to add fields to that but currently with no success. When trying to create an alternate form I have no success displaying it as well as the new fields I create on the Alternate form that inherits from the original displays "This field has no database representation."
It looks like I may have to clone the existing web part and module and add the functionality from here but wanted to verify there was no other way before I went down that path. If I can help provide any additional information I would be happy to assist. And again thanks for the suggestion so far!