First of all, let me say that I am from the Deep South so I am very familiar with crawfish. After reading the history of this restaurant on their website, I can say with confidence that Vegas is not the place to learn about crawfish. Nothing in Vegas is real. It's all imitation. Unfortunately, this restaurant follows suit. Crawfish should be boiled live and dumped on the table with new potatoes and corn mixed in. Charging additional for those items is petty. I give the flavor good marks, but I understand what others meant about the service. Our server was very friendly, but somewhat slow. I think it is because the servers pool their tips, so individual effort is not necessarily rewarded.
If the restaurant is not terribly busy, it's definitely worth stopping in and giving it a try. If you are familiar with crawfish from the south, be prepared to pay extra for sides, tell them what kind of spice level you want and try to interpret what sauce you want. That's right, I said sauce with crawfish.