You did a great job on your box, and I bet you get lots of people asking you where you got it? Looks like the only thing you need to add is the fresh fruit, and the chocolate dipped strawberries would be a nice touch.
You could probably put everything in a soft-sided cooler with one of those little freezer packs and keep it all cool until showtime.
We did the Fantasmic seating, only because it was our first trip and didn't have a clue as to what we were doing and I knew that would be the easiest thing. Because of the expense we won't be doing that again for a while, but we definitely did not regret spending the money this time. I might add it was the first weekend that Fantasmic started back up after being down for the Winter, so we knew it would be jam packed, and again we were clueless. Next trip we will be a little better prepared, like you.