The MGM Detroit Casino seems to be the most opulent and best out of the three Detroit casinos. It gives one the closest feel to actually being at a casino/hotel in Vegas.
Parking can be done via valet or on your own. Each floor on the parking structure reflects digitally the amount of spaces available on that level. During busy times it can take about a half hour to find a parking spot in the self parking area. What I would suggest is to park on a higher floor to avoid this delay. Parking is free in the structure. During off peak times one should not have a problem parking on the lower levels.
Once in the casino one feels like they are in Vegas! There are high ceilings. Lots of slots and table games. The ventilation is great from all those that are smoking. A high end slot and table game area as well. The MGM slots seem to pay out the most as well compared to the other Detroit casinos.
Many bars and restaurants also permeate the location. I would recommend the buffet. The food and layout is very unique and unlike any other. There is a seafood, Asian, meat, and dessert area among many more food stations. The ice cream and seafood stations I would highly recommend. The only issue is that although the sushi did taste good, the seaweed wrapping was a bit dry on some of the pieces which may relate to it having sat around for a while.
The only other issue I would have with the food is based on my experience in the cafe area. I ordered from the Asian restaurant and for the price of around $10.00 the amount of food I received seemed to be a very small amount. If one wants rice or any other additions I believe it was a $3.00 charge for each item. Although there were issues with the price and quantity the food did taste awesome.
Good luck when you go and may you win big! : )