Would you consider this "normal"
Went camping at the beach this past weekend. As usual, it was hot and humid. I have a 15k AC unit, but it fights to keep my bunkhouse cool. Anyways, I decided to try something at night to help keep the sleeping areas cool. I closed all the overhead vents, except the one in the bedroom, and the one in the bunkhouse. It did push more air into the bunkhouse. After waking up, having coffee, and walking the beach I returned to the TT. I noticed that in the general area of both closed vents in the living area, condensation on the ceiling. It was cold to the touch which leads me to believe it was a result of closing the vents. Naturally, I then opened them, but we then had to pack up and leave. Anyone else experience this before? Is there anything to worry about? Any ideas? TIA