vomit, if you are looking for a couple places to have a few beers and some eats before the show that are close by, then I'd suggest checking these places out.
Pretty decent brewery with really good beers and they are fairly inexpensive. Try the sampler...It's 6 8oz beers and they're cheap. It's good way to get a decent beer buzz without spending a load of money. This place is right by the entrance to where you will be pulling up to to get to the Orbit Room.
http://www.michiganmenu.com/grbrewing.html
If you are not into brewery type places and just want like a beer and a pizza, then this place ain't half bad. It's really close to the Orbit Room also.
http://www.uccellos.com/index.php
Also, don't bother going to the strip club next to the Orbit Room. It sucks.