You won't be in ski boots all the time, and you'll want to be comfortable walking around town, the hotel, and to restaurants. Given the mountains' casual atmosphere, there's no need for dress shoes or clothes. The only eveningwear needed on most snowsport vacations is pajamas. After an active day on the slopes, most folks are in bed early. One thing that would be easy to forget when heading for the high county is a swimsuit .
Most hotels have hot tubs and indoor pools, so bring one along.
In your toiletries bag make sure you have sunscreen and lip balm . Higher altitudes, sunny days, and reflection from the snow can produce severe sunburns, even with temperatures in the 30s and 40s. Also make sure you have moisturizer . Higher altitudes, especially in the western United States, bring very dry air. Heloise has a helpful tip to add here.