Depending on what the temps are going to be, make usre you have the tank heaters turned on if its going to be below freezing
The floor usually stays pretty cold, so make sure you have some nice, warm slippers to hang out in.
Cindy put a piece of the shiny silver stuff that you wrap a hot water heater with between our matress and the wood on the platform and it helps to keep the bed warmer.
If you're going to have full hook-ups, bring a small space heater so you dont burn through all your propane trying to keep the camper warm.
Make sure you crack a vent when cooking to help keep the condinsation from forming on the windows
It's easier to sleep with some fleece pants, socks and a warm shirt on than it is to allow the heater to run all night long
Dont leave the space heater or anything else burning while going away from the camper and remember to have lots of fun.
If you're planning on spending more time in the camper than out hiking, make sure you bring some movies, books or board games to keep you occupied for the length of the weekend