We booked it last year for the fireworks cruise. It was wonderful. My only disappointment was that the music was not played on board. Hopefully, they now have the music available on the boat.
We cruised seven seas lagoon, past the resorts, and would have seen the electrical light parade but it was not being run that night (can't remember why.) We anchored directly in front of the castle to enjoy the fireworks - spectacular.
We ordered cinderella's slipper dessert which was delivered to the grand one and served in the galley.
One of the best features was no crowds to fight after the fireworks are over.
We highly recommend it.