Were you running the propane heat or cooking inside without exhaust? RVs are known to have lots of condensation on cold days with propane heat going. Propane gives off a lot of moisture when burning.
2020 Ram 1500 Limited (when Chrysler gets around to shipping it)
2020 Dynamax Isata 5 36DS 4X4
Sold: 2015 Rockwood Ultralite 2604WS
No longer mine: 2006 Rockwood Roo 23SS
All pop-up and tent camping before...