We have camped with temperatures down to the teens at night and have never had condensation on the inside of the tent ends.
Use the exhaust fan on the range hood whenever you are cooking, and use the exhaust fan in the bathroom when you take a shower to cut down on the moisture in the trailer during the day.
At night we crack the roof vent open slightly, and use bunk fans to circulate air into the tent ends. Keeping the air moving in the tent ends helps a lot to prevent condensation, plus it circulates heated air from the trailer into the tent ends.
Gary