Depends on which resort you work at. At ours it was 12 hour nights, and big pushes ( ie forget about days off for the month of November). One of the hardest jobs you will ever do. We had to haul all our gear up by hand many nights because the sleds were either broken, or just not enough snow. Snow guns can weigh anything from 30lbs, to 80lbs. Then hauling hose around, man it will keep you in really awesome shape. Then -40, getting wet...it's tough.
BUT..... one of the best jobs I ever had. Just a battle, and just how close ya get with the crew, and seeing everybody develop as a team just makes it worth it. Snow makers are the toughest dudes on the mountain, no doubt about it.... plus you can move directly into cats after that.
If you really want to get into it here are some tips.
Wear plastic mountaineering boots to work.....your gonna be post holing with gear, and its wet/cold. These boots are basicly made exactly for this.
Marino wool socks, and TONS of them. Always keep an extra pair in your locker..... keep those fucking feet dry.
Gold Bond powder on your feet before your shift..... keeps that bacteria down.
Wear those insulated rubber gloves, with little gore tex fleece gloves under. Leather/nylon woun't cut it, you will get wet hands all night.
Wool underwear, and a nice down under jacket to keep warm.
When your jacket freezes ( which it will...a lot), keep it outside. If it melts out, your just gonna get wet.... which means hypothermia.