Personally, none of the other views of Wishes (CG, Narcoossee's, the beaches, etc.) are nearly as good as the view from MSUSA itself. If you are going to be in MK that day or have hoppers, I would get an earlier ADR, for say 6:30 or 7, this way you have enough time to get a spot on MSUSA. If you have your mind made about watching from the deck at Narcoossee's (as a PP said don't count on a window seat and having no one stand in your way) I'd shoot for an 8:30 or so ADR this way if you are seated on time you should be getting dessert right after Wishes ends.