Held every Friday 6:00-8:00pm and on select Saturdays and Sundays (at various times), pajama parties are a one-of-a-kind thematic "after hours" celebration for children 2.5 - 6 years and 7 - 10 years featuring gym exploration, art, story, cooking, games, relays, and more. All parties culminate in a disco dance party, and dinner is provided.

http://www.nykidsclub.com/Open-Play-Space-For-Kids-Pajama-Party-NYC.cfm