I have a Sony DCRTRV260 Digital8 Handycam Camcorder
We used it at Disney World last year. It worked well, but
The feature it does not have which I wish it did was some sort of stability control. Taping the fireworks and parades often left my arm tired and at times resulted in bumpy film footage.
So I would look for a camcorder with stability control.
Make sure you buy the longest battery possible.
Although we had 2 batteries with us....we really needed them to be the high capacity ones, as they seemed to both be dead by the end of the night.
If you do bring 2 batteries make sure you have a 2nd quick charger...so you can charge one in the camera overnight and the second in the quick charger overnight.
Finally, film as much as you can. I have the parades and fireworks from most parks, I filmed Hoop De Doo, Beauty and Beast, Little Mermaid and soo much more.
During the Little Mermaid I switched to Night Vision and you can see the actors in the background moving the characters. It was pretty neat.