I went this past Saturday in NYC, and it was a lot of fun, and holds a lot of promise for future code camps. It wasn't perfect, and the sessions were uneven, but the great sessions were really great, and I learned a lot.
It was also a lot of fun meeting and mingling with some of the best in the business. The enthusiasm in the community totally gets me juiced.
It went from 9 to 6, with short breaks between the sessions, so I was exhausted at the end of the day. But it was definitely worth it for me, and the price was right (free)