Emiril's Tchoup Chop is not at City Walk. It's in RPR. Do you mean the original Emiril's? As for which is better and why...it depends. Menus are vastly different. Atmosphere is vastly different. Price is vastly different. One is formal, the other informal. If with young kids - Margaritaville probably better. You want a party atmosphere - Margaritaville. If you want fine dining, Tchoup Chop. If you dont like Pacific Rim type food and prefer burgers and fries, Margaritaville. I've been to both and I like them both for different reasons.