It may look and sound more like a self-deprecating sports bar than a raw bar. But go to the half-price oyster happy hour — actually, more like three hours, from 3 p.m. to 6 p.m. — every Tuesday through Friday, when a dozen on the half shell are only $18. Varieties range from Little Skookum to Cranberry Creek to Pink Moon, or you can try them chargrilled, roasted with Andouille sausage or chili butter, or turned into ceviche. Don't worry. From shrimp to conch to lobster, Gringo's offers plenty of freshly chilled (or grilled) seafood. And thanks to its new patio misters, you won't feel like you're dining in a sidewalk sauna.