Found this post on the FLL forum
"
Our experience in traveling to Atlanta from Tucson last year – a team member carried the robot on the plane and our spare RCX on a simple chassis went in checked luggage.
There was no problem with carry on at all.
The RCX in the luggage was a different story – the luggage received some extra attention from the TSA staff. Our checked luggage RCX had been opened and the cables and batteries had been removed but left in the suit case. I would not put anything with batteries and wires which you want to stay assembled in the checked luggage."
Our hotel won't accept packages

. Has anyone successfully transported a Vex robot in carry-on luggage? My suspicion is with all the metal parts, unlike LEGO, they're not as likely to allow you to carry on.
If checked luggage is the only choice, we plan to disconnect the wires and batteries and store them separately.