i have a very ligitimate concern with FP+ and on line prebooking. People will become "booking happy" and prebook an entire trip 6 months in advance (which is ok IF USED). I see LOTS of FP+ booking no- shows, which will affect other vacationer's ability to obtain FP's when entering a park for a dayI fully expect this to become a significant issue and possibly Disney starting a NO-SHOW charge to FP+ (since everything can be tied to an account). It is a great idea but i fear it will be greatly abused once fully on line requiring Disney to adapt (at our expense). I give dining in parks as a great example (for special places), 6 months out +/- a few days and they are full!