The interior of a party bus usually gets paid quite a bit of attention, and a big part of the reason what that is the case has to do with the fact that this is the space that you are probably going to be spending the vast majority of your time in when you decide to temporarily rent a party bus in some way, shape or form. However, just focusing on the interior is not really going to be enough if you actually want your experience to feel like it is truly as complete as you would like it to end up being.
The way the party bus is manufactured on the outside can matter a great deal too at any given point in time. For example, if Michigan party buses are not made with good suspension, this might make it so that the bus would tilt and shake quite a bit. After all, there would be a rather large number of people in the party bus and they would all be moving around and dancing which means that the bus needs to have good suspension in it to ensure a really smooth ride that would not cause any major form of discomfort at all.
You should make sure that you are looking for party buses whilst keeping this really key factor in mind. Try to ask your service provider what kind of suspension their party bus has, and only agree to rent it if you feel like it is sufficient. A great way to test this would be to get on the bus with a few people and jump around. If the bus remains stable, you should be able to rent it with ease.