hmmmmm......12 seasons of pulling my ski hut up to the mtns, nary a scratch!
Chains for the truck and trailer will be needed. As noted, more for the down trip than up. ALtho with a rwd rig, probably more up and down than those of us with 4wd rigs. These are chain chains, not cables! A decent all weather/at tire will be fine.
Heated tanks are not an issues. As heated tanks back in the early 90s and before where not common. Only issue I had, was once or twice thinking my black tank would be drainable, was a chocolate fudge cycle! anyway, a day or two later, usually thawed, and I could drain it. If it was below freezing during the week and next trip. We did not fill it weekly. we could go 2-3 weekends before HAVING to drain the tank. Have kids go in the area buildings if possible.
Battery bank. LOTS. I could go thru two size 27s in 24-36 hrs in sub 20F temps, just from the heater running. Much less kids turning on a tv/vcr combo! 3-4 hrs the batteries are drained. SOME area's have electric hookup, a lot do not! NO ONE that I know of has water or sewer hookups. Lots of battery and a generator will be needed. At my area, unless it was new years, generators were off at around 9-10pm, did not turn on until 6-7pm. If you used it during this time, you would get LOTS of stares in the AM, or folks wondering why the genset was on all night.
If you can get the enclosed roof vent covers, that allowed your vents to stay open, keeping the moisture from breathing, running the fridge on LP, heater etc to a minimum.
If you have a slid, be carefull on its use. I have seen one or two have issues with heavy snow falls, ie breaking and bending. If you have an awning cover, take it in with the slide, or it will break under the weight of the snow if you get a lot while there. Same with awnings over ANY of the windows, keep them in.
I had 1 10 gal tanks, worked better than the std 2 7.5 gal tanks. I would typically use .75-1 10 gal per friday 3-4pm until sunday at 6pm when I headed for home.
ALWAYS take off and get there with a full tank of water. This is helpfull to be heated, or inside the trailer as mine was.
Manual drains may freeze, stopping water from going farther than that spot. Try not to worry about it if your first and maybe only trip to the mtns. If you go a lot, remove the drains and your freezing issue like this is over. I got use of the toilet after this. Shower was used to store ski boots over night. Rarely used for a weekend. a week was a different story.
Driving, go slow, do not get in a hurry. I would not do studs personally, as the dry driving is way worst than the few times, you need them for black ice etc. If it is that bad, you usually have chains on any how.
I have seen over 150-200 rvs at one area I frequent, 50 in the electric hook up, another 100 or so depending upon weekend in the genset area. DO NOT use a genset near the electric hook up area........you will piss folks off, and they will forcably send you to the area with the gensets! Do not ask me how I know this....... With over 150 rv's in the area, they range from TT, to 5w, to type A, B and C motor homes, campers in pickup beds, the majority are rwd only! RWD folks usually have a traction tire, and chain option to get to the parking lots. Take a shovel to remove snow from the front of the rig if it is snowing, other wise you may find yourself high centered. A WELL BUILT push broom is also good for removing snow from the front windshield and hood, along with the slide and its awning if out and snow on top.
Enjoy the time on the hill. I will not trade in ANY of the 12 yrs of 10-15 weekends a season I spent on the hill with my kids. We had a much fun using the TT as a ski hut as we did in the summer. Oh, the license on the trailer was "skiht46" Then again, the license on my trucks since 1990 is my handle name.
Marty