i am planning a trip too so i am of no help.
where are you reserving these? i didn't see a safari and we are traveling in FEB 2011.
We have done both and I much prefer Tusker House. The food is so much better than it is at Chef Mickey's. Plus you get to see Daisy at Tusker House. She is a hard one to find sometimes! Either one is a fun experience. Enjoy!