There may be RV's parked in the covered bays at THAT; besides, you'll probably have to pay to park there, since they normally charge for RV's that use hook-ups. There's lots of room to park at THAT; but I only recall one entrance/exit to the track from 41; so there's no easy egress from THAT, that I recall.
Maybe if you call the number listed on their website, they can give you better info.....
http://www.theactiontrack.com/actiontrack/Welcome.html