A few weeks ago I got the chance to go on a tour of the kitchens of Yankee Stadium with a group from FCI and I did a write up for the school's blog, The Hot Plate. We saw a lot more than hot dog vendors and concessions stands, as we got to go behind the scenes of the posh clubs and suites. We also got within a few steps of the field, which was pretty cool.
Check out the post here: http://frenchculinary.blogspot.com/2011/08/yankee-stadium-kitchen-tour.html
The security at the stadium was like Fort Knox, and unfortunately I wasn't allowed to take pictures on most of the stops on tour, but here is the slideshow of what I was able to get: