[Gabe]

You can bring anything you want into the pits. What most teams that drove up did was park in a convinient location, unload, and then leave. Look at a map of the competition building and find the entrance where teams enter. Then find the nearest street access. All tools are allowed in the pits, except for those that are not permitted as stated in the rule book (torches, welders, etc.) My suggestion is to unload your cargo early, before team registration actually takes place. Once teams have registered other teams will begin unloading, and it will be hard to get your own stuff out and into the competition building. Although our team did not drive down this is what all other teams that drove were allowed to do.
Have a great time at Nationals!