Review for MGM National Harbor Review For MGM National Harbor Google User May 6 '17 at 13:01 This is my first and last time visiting. I enjoy gambling but definitely do not enjoy being ripped off. The machines do not pay as they are supposed to pay. The slots are super tight. There are so many people leaving unhappy. I didn't lose much but I do not intend to visit ever again. Such a waste. View full site to comment or like