Late March typically has great conditions in LCC. I would also recommend Alta over PC, since you said the nightlife isn't that important.
The Sunnyside area has the most beautiful beginner terrain I've ever seen. I can't think of a better place for a beginner to gain skills, confidence, and a love of skiing.
Plus, think of yourself, too.Seventeen years of skiing in the east, you'll want to experience something that's totally unlike what you're used to. The Park City areas will be different, but not nearly as DIFFERENT as Alta and the Bird. The snow, the scenery, the spectacular terrain... Trust me. 3 years ago, I was looking forward to my first ski trip out west after skiing 17 years in the East.
Being a dream vacation, you might want to consider staying at one of the lodges at Alta (Peruvian, Alta Lodge, Goldminer's daughter, Snow Pine, or Rustler). They each have their own personality.
I stayed at the Peruvian the last couple of years and loved it. Prices include all your meals and the food is very good. Not fancy at all...they don't even have TVs in the rooms. But it's a place where you quickly feel at home. There's a great deal of socializing around the dinner table, in the outdoor pool and hot tubs, in the bar, or sitting around the fireplace in the lobby.
Each of the lodges is unique; and the majority of their guests are return visitors. With the possible exception of the Rustler Lodge, these are not luxury accomodations. But they have a comfortable, friendly, laid back atmosphere that keeps their guests coming back year after year.
With $$$ being tight this year (son in college, daughter will be in college next Sept) I'm going to be staying in an inexpensive hotel in the valley on my trip this winter. But I will definitely miss the Peruvian experience this time around.
Edited by DropKickMurphy - 11/19/10 at 3:41pm