We were looking for a light lunch before the Las Vegas Rock N Roll Half of a Half Marathon that we were walking in and decided to try the RM Seafood restaurant inside the Mandalay Bay where the starting line was going to be. We ordered the spicy tuna, fish tacos, salad with salmon and mussels (sans blue cheese) and edamame! Portion wise, my dining mates enjoyed their meal but it wasn't as hearty as they hoped it would be. My bowl of mussels was humongous and tasty with tomatoes and bacon in the broth as well as some bread to dip in the tasty broth. The edamame came piping hot temperature wise as well as having a tasty kick to it. I enjoyed my meal and my fellow diners wished there's might have been alittle larger. Service was excellent and I loved the atmosphere.