'It is my pleasure to announce the reopening of the MGM Grand Detroit Poker Room,' Keith Frankel, manager of poker operations, wrote in the email. This comes as the Michigan Gaming Control Board has approved provisions for Detroit's casinos to reopen poker rooms. MGM Grand Detroit sent out an email to customers Wednesday, saying it will reopen its poker room Friday, with capacity restrictions amid the ongoing COVID-19 pandemic. MGM Grand Detroit will be the first casino in Michigan to reopen its poker room since March.