4 /5 Kaylor Boomer: Of the 3 casinos in Detroit, MGM has parking that is actually right beside the casino floor. Its the busiest during the off hours. You can go at 4:30 am on a Tuesday and theres people. I was at one of the other casinos on the bottom floor. It was completely empty and I felt like I was in a. Horror movie. I ended up panicking and running up the escalators. The downside is MGM had the last promos and opportunities to get free play.