We did the Safari Celebration Dinner at AK in April. It was great! There was a longer than normal safari ride where the driver would stop so you could take pics and ask questions. Then there was a great dinner at Tusker House. They had music, live animals, and characters after dinner. We all loved it.
I wanted to do the fireworks cruise, but a couple of people in our group weren't into fireworks, so that didn't work out for us. If we ever do a GG again, I hope we can do the cruise.
I would suggest booking as early as possible. I booked the safari dinner 180 days in advance. I was glad that I booked far in advance because it was fully booked a few months before we went.
Have fun!