Yes, he's had turkey legs before, and loves them.
After his first turkey leg experience (about 3 years ago) he insisted that he wouldn't crave one again for 5 years, but he probably has 2 turkey legs on every trip.
I don't get the turkey leg thing at all, but it's the one food thing he really looks forward to. I always forget to write down what kiosks serve the legs. We're going in two weeks, and I wanted to be prepared =)