Maple trees are tapped in much colder weather, preferably in a freeze/thaw season. This whole movie is in prime summer, with green trees everywhere.
There is a gas fire pit (somehow) in the tent at the girls' bachelorette party. The audio is even picking up the gas sound, and the flames are obviously burning gas. Yet they suggested dousing the fire with water for the night before going to bed.
"Foreclosure" letter is addressed to the bank, not the homeowner.
The location used for the maple tree farm is clearly a forest of cedar trees.