I spent Christmas 2010 on the east coast visiting family and dashing in and out of airports and hotels. We were only supposed to be there for three nights, but a big snow storm kept us there an extra 4 nights. I had plenty of time to play outside in the white fluffy stuff. The best part about celebrating Christmas on the east coast is that Santa Paws comes to the east coast before the west coast, so I got my presents 3 hours earlier.
As far as hotels, many hotels are dog friendly now, especially for dogs under 40 lbs. I stayed at the Westin Philadelphia in Center City http://www.westinphiladelphiahotel.com/ as well as Aloft Philadelphia adjacent to the airport http://bit.ly/hqw9lK. Both are Starwood hotels and if you ask they will give you dog supplies- bed, bowls, treats, toys, etc. My people didn't ask at the Westin (nor did the Westin "offer") and we didn't get anything, despite having to pay a $50 pet fee. Aloft Philadelphia delivered lots of goodies to my room and they didn't charge a pet fee. Pawsome!