We used the Fantasmic Package twice, both times at Hollywood & Vine, which has a more than adequate selection of food to satisfy the picky eaters in my group.
The first time in June, we didn't start up the path until 30 minutes before the show began. We were lucky to get some of the last seats on the far right. It was difficult to see the show's action at times.
This February, Dad held down the fort 1 hour early while we shopped. The CM's gave us 1/2 of our tickets back for re-entry. My DH snagged a seat on the far side of the reserved section's rope. We had a great angle to see the show and I got some great pictures.
Lastly, I think one of the best features of the plan is the quick escape route out of the park to catch the bus before the crowd.