Considering you're doing it over Disney World, you can't go wrong with Disney in-jokes!
"REMEMBER WHO YOU ARE..."
"WE WANT DREAMFINDR BACK."
"SAVE (INSERT RIDE THAT IS CLOSING SOON HERE)!"
"SOARIN' OVER CALIFORNIA? TRY SOARIN' OVER SOARIN' OVER CALIFORNIA!"
"I CAN SEE CINDERELLA CASTLE FROM UP HERE!"
"TO INFINITY AND BEYOND!"