There are actually a couple of different opportunities for the wishes fireworks cruise. There is a pirate cruise that is part of the magical gatherings experience. You must have 7 or 8 in your party I think.. That one looked like a lot of fun as you get a pirate or two on the boat, and when you get back you get to meet Peter Pan. I tried to get that for my family but couldn't as we were not a large enough party. I even offered to pay for the 2 extra we needed! But couldn't make it happen...
There is also private wishes fireworks cruises. It is a private pontoon boat that leaves from the Contemporary Marina.
I took the entire family last year and everyone enjoyed the ride around the lagoon, the electric water parade and the fireworks. I was a little, well very, dissappointed that the radio was broken and we had to listen to the other boats radio for the music. There were several boats around us so we could hear the music.
The "captain" was very nice and made the outing enjoyable.
Hope this helps..You should be able to get the private one...