Welcome to the forum! Good to see another podder from Michigan here. We are located about 25 miles north of Traverse City, on the poor side of the road overlooking Torch Lake.
It is indeed a challenge to keep condensation to a minimum and it does seem counterproductive to open windows and run the FF fan to keep the moisture level to an acceptable level, but it is a necessary thing to do. What we do in our 177 is to open the windows on either side of the bed about 1/4" and the lid to the FF in the bathroom is open about 1/2" but the fan is turned off. This has worked quite well for us, there is still a minimal amount of condensation but not a ridiculous amount as when we had everything 'buttoned up.'
Will you be joining us at the Traverse City R-Pod rally June 17-20?