I'm sure its fine. Everybody at the lake has their own fifth wheel or RV, and they have decks and power brought in as well.
I know its fine because we have one really crabby neighbor who complains to the county about EVERYTHING. We built a shed with a camping potty so we could use the facilities outside of our old trailer and he came along to tell us to take it down.
We didn't and got a letter from the county telling us outhouses weren't allowed. We let them know exactly what we were doing and all is well now.
But, if there were issues with campers being used in the area, I would bet my house he would have complained about it.
Zoning isn't an issue, I also checked with full timers out there.
Any other tips not zoning related?