Karen's thoughts have made me recognize that I wasn't being skeptical enough about the vents on the cabinet doors. The idea needs testing. It is possible that convection will provide enough air circulation to help, or it may not, but gut feel says she's right.
I may add a couple of vents on the cabinet doors leading under the bed storage, but I won't go overboard adding vents to everything until I've tested things.
But, I think vents on the bathroom door do still make sense. We have both a window and a ceiling vent in there, one or both of which will be open at least a crack most of the time. With the ceiling vent in the main area of the trailer open and the fan on, a door vent will help circulate air in the bathroom.
2013 Escape 19 ("The Dog House") , 2012 Nissan Frontier