Joy McCann has the details. Short version: CPAC 2013 will be at a site with better parking, much worse commute if you don’t have a car. I’ll add: expect a lot of complaining next year about the new venue. People hate it when a site changes, unless the change is either truly trivial or the change is an improvement in every way.
Also: dagnabbit, this is going to complicate my life. The commute really was convenient.