The best advice that I can give is that if you plan to dine at Pappadeaux, plan to arrive early. This place is positively packed later in the evening! Still, if you're ready to set aside the money to have a good night, you'll probably get it here.
The restaraunt is extremely customer-service oriented with very polite employees who attempt to fulfill all your needs. They'll even offer suggestions on what items to select depending on what your party is looking for, very helpful!
On this particular trip I settled on the Crawfish Etouffee and ordered a Bloody Mary from the bar. Between my meal and our appetizers (we went with the combo platter and pan-fried frog legs) I can say that I was totally satisfied by the end of the night. Things were noisy but we were in the mood to relax and have fun and the atmosphere was certainly condusive to doing just that.
The food may not have been particularly authentic compared to real Cajun/Creole food but it was completely satisfying and I was surprised that my drink was relatively inexpensive for its size and for a bar inside a restaraunt in the middle of the city. While it can get expensive fast at Pappadeaux, the folks here definitely earn their money. The live music on the patio was certainly a plus as well.