Yup! That is where most of my pics fall between. I tend to go wider at Epcot, long in Animal Kingdom, and inbetween at MGM and MK. Speed is as important as range at night.
I have gone with 17-40mm f/4 L, 24-105mm f/4 L IS, 24-70mm f/2.8 L, 70-200mm f/2.8 L IS, 28-135mm IS, and a whole...