Very common under your situation. So on the 70 degree days in FLA you get warm moist air entering camper. At night that warm moist air is hitting the cold air around the exhaust fan ( no insulation in exhaust fan) and condensing and dripping in. As this is normal weather conditions for your area, if you have shore power, buy a small dehumidifier and run it when temps are above 40. If you get one with the remote drain option, you can run condensate down drain and not have to empty every few days.
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