Fantastic beer but sub-par food. Sounds about right for a typical brewery. I went to Great Lakes with a friend who love making homebrew. Great Lakes produce some excellent beer as we sampled majority of them. We also went on a tour which was neat but nothing new if you've been to other brewery tour. It was quite small actually. Nice outside patio seating and cool merchandise store.
As for the downside, the food here ranged from so-so to uninspired. Definitely needs some work. Nonetheless, I'd recommend going there for beer and tour BUT not for the food.