"Ralph and Kacoo's" is a seafood restaurant founded in Baton Rouge, LA, which opened a branch in the French Quarter in New Orleans a while ago (maybe 10-15 years ago?). I think I remember them closing down and reopening during the intervening years. Or maybe they closed down and didn't reopen; I'm really not sure.

I haven't eaten there in years, and haven't been paying close attention (even though I spend an occasional evening directly across the street at O'Flaherty's Irish Channel Pub, a live music venue.) My memory, and my understanding of other peoples' consensus opinion, is that R&K's is/was good-but-not-great, roughly equivalent to dozens of other places in neighborhoods all over town and therefore not especially worth a special trip to an area where there's no place to park for free on the street.

Of course, if you're a tourist staying in a nearby hotel and strolling around the Quarter, it would be as good a place as any to enjoy a shrimp po-boy, seafood platter, or an order of boiled crawfish or crabs. The local seafood is so outstanding that it doesn't require a genius chef to produce good and reasonably-priced meals ~ just get good ingredients from a reputable supplier and follow the many traditional time-tested recipes, with or without minor variations.