Apres ski festivities seem to start early on a nice day, in fact, around lunch time if the weather is accommodating. Many find the patio at the base of the KT-22 lift too nice to leave and park themselves for the afternoon enjoying the camaraderie of friends and the sunshine.
Patio at base of KT-22 lift
Alexander at "High Camp" is a good rest stop before catching a night run.
Le Chamois in the base village: Pizza and sandwiches
On Mountain Dining:
Gold Coast: mid-mountain lodge
Locally at Squaw Valley mountain base village:
Fireside Pizza and Pasta
The best nightlife in the area is South Lake Tahoe and is centered at the casinos. This is a long trek from Squaw especially if the roads are not clear. North Lake Tahoe is a good option with a reasonable drive.