I did not pull the Fish-eye out unless I was looking for that kind of shot, or needed Extreme Wide shots like at the Disney Studios, where there were lots of cramped spaces. I also used an Ultrawide lens, 10-20mm for most of the wide shots.
I used a trash can on the fireworks shots, and the other low light shots were done holding the camera and using a very fast lens, normally a 1.4, 1.8, or 2.8 and shooting around 3200 ISO or higher.