I only ever visited here for their oyster specials and for those it's a great place to visit. $1 or close to that per oyster of reasonable quality are not easy to find so it's no surprise that the shop fills up very quickly on those weekdays they offer the special. They do take online reservations through open table so I highly recommend booking ahead instead of waiting in line.
They also have a limit of 2 hours per table during the oyster days (not sure if they also have the limit during other days). Which is typically a lot of time but they do get busy and service/food can get delayed quite a bit depending on how backlogged they are so if you are a large group I would recommend placing orders ahead if you are thinking of ordering more. If I didn't have to wait for 20-30 minutes for my oysters I would probably eat more of it. Come to think of it maybe they slow down the service so that people like me don't gorge on the stuff.
The quality of the oysters are pretty good and even after quite a number of visits I've never gotten sick yet, which is something I'm very wary of when having oysters, especially inland. I suggest mixing the value ones with some quality ones just to mix things up and have some variety on the plate. I think their multiple sauces for the oysters are cute too, although I stick to the boring ol horse radish and cocktail sauce most of the time.