It seems like a lot of other smaller communities might do the same thing, and not being linked to the cruise dates would allow meetings to be scheduled not during pop warner...or so close to Christmas.
I think that organizing events for TMIP would be great. It's kinda hard to stop taking pictures once you start, and you can take pictures everywhere (even while waiting for food!). By arranging main events (say two during the day and one at night--I'm thinking the first session of the day would be a 101, 102, 103, and then one day shooting meet and one night shooting meet) and more flexible secondary events (in between events), you can let people schedule their day with family and friends. Plus the advantage of a smaller group than all of mousefest is there is no need for the overhead of ballrooms, etc. The big meet and greet could just be an extended 101 session at Tomorrowland Terrace.