When I was there last January, I used all 100 speed film. I am a stickler for having crisp photos. That worked most of the time, with the typical sunny Florida atmoshere. However, my nighttime photos didn't come out, not surprisingly. I plan on taking 2 cameras this year, with the cheaper one carrying 800 speed film. I had 400 speed film with me last year but I never seemed to use up the 100 speed film in time.
I really want to get some photos of the fireworks, so I might take a travel tripod too.
BTW, I carry my camera stuff in a diaper bag - not many people would want to steal a diaper bag!