we rotated thruout the competition, we started in Achimedes, our home field, then proceded to other fields thru out the whole two days, finally ending up on our home field for finals, and then on Einstein for the final 4.
As far as robot carrying goes, i would recommend building some sort of cart to carry tools and the robot, and at least extra one battery so that you wouldn't have to carry your robot the 1/4 mile it takes to get to the field. Just a suggestion.

Cya all at Nationals.

http://www.usfirst.org/robotics/res_art9.htm