Yep, my ticket partner bought me one because it had the shortest line, but it was one of the worst beers I've ever had.
You do know that a shandygaff is a beer mixed with lemonade, ginger beer, or cider right? Granted that one is a pretty crappy example, try Ria Ria for some decent ones. If you want a great one make it from carbonated lemonaide and an Irish beer.