Even though our tow bar allows unlocking without the toad being straight behind the rig, many do not so I'd unhook wherever you can keep things in a straight line inside the park. Even if you block a street for 3-4 minutes, others have been in the same situation and should cut you some slack as long as you don't diddle around. When checking in, ask those behind the desk. They'll give you the straight skinny.
Pigman & Piglady
2013 Tiffin Allegro Bus 43' QGP
2011 Chevy Silverado 1500
SMI Air Force One toad brake
Street Atlas USA Plus