I'm at Las Cuevas training & acclimating at the moment, and since there hasn't been a lot of snow, it will be ICY!!! You will be able to skin it up but not be able to ski down there now except for the winter and it HAS to be done with a guide, experienced or not. The snow is disappearing on this side of the border. There's some spring skiing on the Chilean side. If you want to warm up, there are a few places to do ski mountaineering here. I am currently training with the Argentinian army Andean Division. Shoot me a line at 54 9 11 6031-6578 or 54 9 261 471-0506 if you want to warm up before the park opens on the 15th of November. Just bring your beacon, shovel, probe, climbing equipment & we're good to go. There is no supermarket in the mountains, I would suggest that you get your food & supplies, especially gas canisters, in Buenos Aires, Mendoza, or in Santiago, if you plan on doing a multi-day traversing, climbing, and/or trekking. It is beautiful here, especially trekking the Andean railroad route to Punte de Inca or Punta de Vacas. There is Cerro Tolosa (5432m), which is a day climb, maybe two if you want to camp, or bivy it out. Weather now is between 5c and -5c, plus winchill factor. It is quite windy here in October & November, with winds up to 100 kph at Las Cuevas, but it's well worth it. If you need to get Acetazolamide, there is none in Mendoza, get them from home or in Chile, however, there are Dextamethasone in 4 mg bottles (IV not included) in case you need it. If you need to cross the border or entering through Chile, DON'T BRING MEAT OR VEGETABLE PRODUCTS!!! You will be OK if you're entering Argentina through Mendoza. If you DO fly in through Mendoza, please bring some beef jerky, it'll be OK. I kinda missed it after 1 1/2 months of being here.