Book tickets early in advance using kayak.com and bing.com's flight price indicator.
Stay at super 8's for cheap, or upgrade to Holiday Inn brand with employee pricing
http://slickdeals.net/forums/showthread.php?sduid=13660&t=2163962
Use this thread here to show you how to get the deal.
Book with enterprise for car rental. Cheapest place in SLC 3 out of 3 times now. If you are under 25 and are subject to the underage driver fee. don't fret.
http://slickdeals.net/forums/showthread.php?t=1074811
This thread here has the coupon code for that as well. Browse fatwallet.com for AAA discount codes as well, and check for any last minute deals. Also check the cost of vehicles, A LOT. I've seen the price fluctuate just like an airplane ticket. Thing is, you can book it, and cancel it with no fee. The only thing in your vacation that you an do that with (haha @ costs of rebooking / cancellation fees of hotels / airfare)
You can save more by getting your car away from the airport. but than you gotta figure out how to get to and from the airport, for the amount of money you save doing that (which isn't enough to justify it in my opinion unless you have a generous NS'er who is driving you from the airport to the car rental place)
Go to canyon sports for lift tickets. if you know people who work at ski resorts you can get lift tickets for cheap (them making money off their free ticket) if not free.
Don't buy an SUV for fear of massive snow dumps and road closure. If you are from the east, its another world driving up LCC / BCC and even going on I-80 in a snowstorm and seeing accident after accident. But you can make it, and if you can't. Bus fee up the canyon is $7.50 round trip. plus you don't pollute as much if you use city transportation.
avoid rental all together and stay on 7200 s or fort union blvd and use the utah transit system for everything to get up the canyons. although you will not be anywhere near park city.
there is no cheap hotel in park city in comparison to SLC. The drive is like 30 minutesish. I give up on cheap hotels in PC. But you can find people who will let you couch surf / rent a room even in the Kimball Junction / PC area if you are very determined to stay in PC on the cheap.
Food, now you can check out the fabulous fast food places you might not have ever seen before (in-n-out, 5 guys burger, carls jr, sonic, chik-fil-a, chipotle, etc). Or you can use restaurants.com , and if you google up coupons for restaurants.com you can get $25 gift certs...80% off. you have to have a minimum order, but the places usually are upscale anyways. long story short. you can eat like $50 worth of food for $30ish including tip.
No im not a sponsored famous athlete who needs to give shout outs to holiday inn, restaurants.com, enterprise, or any shit above. just my observations on how to get shit done cheap.
Thats about it. I say NS'ers should post up how to ski cheap at all kinds of areas. Whistler, Jackson, Tahoe, Bozeman.