You may not have time to go to the campfire/movie between when you arrive at Ft. Wilderness by boat and when you are admitted for the Hoop-de-do Review.
From the marina, you will walk up to Pioneer Hall. There is a gift shop (of course), Crockett's Tavern where you can get a beverage, a petting zoo, small playground, etc. Crockett's Tavern has a covered porch with many rocking chairs, you might just want to relax with a beverage there.
You could also, stay at the beach by the marina and try to catch the water parade ... not sure what time that is.
Another option is one that a previous poster said -- take the ferry and get off at Wilderness Lodge and take a look around, visit the gift shop, etc. and then catch the ferry again to Ft. Wilderness and Pioneer Hall.
I really don't think you'll have a problem filling the time.