OC, have you seen any numbers on average attendance in 2012 and the increase over last year? I predicted at least a 20% increase over 2011 before the season. And I predict right now at least a 10% increase in 2013. I might even change my prediction to 20% increase if they make certain offseason moves.
Regular season per-fixture averages (source: ESPN.com MLB stats):
2012 - 30,010
2011 - 24,877
...a gain of 5,133/fixture over previous season, an increase of a bit over 26%.