I got the Great Dane Brat & Bacon Burger, which I don't think was prepared the way they do at other Great Dane locations... The onions were thinly sliced raw red onions (not caramelized), and I'm not sure that the bun was a pretzel bun...? At least I didn't detect anything special about it (the bun). Still, it was very good and a lot of food... so maybe split this dish with someone else, unless you're really hungry.
The service was SO SLOW though. This wasn't a huge problem for my group, since we had an hour and a half to kill, but if you don't have a long layover, I wouldn't recommend sitting at a table. The bar might be faster (but our food was also slow to come out).
We saw our waitress at half-hour intervals (if even), and she would walk by us when we tried to ask for something (like the check). A member in my group actually had to get up and almost run after her to get her attention. I really think she was trying to avoid any responsibility whatsoever!