If the Michigan Chapter or any group for that matter would like to be group-sited, the only way this can be made possible is to roll in together as a group. From there, Kevin Wolbeck and his team will make best efforts to site the group close to each other.
Of course, the sooner the group arrives, the better chance they have to be sited close to each other. June 3rd is the day I suggest any groups arrive (all together). Much past that and contiguous blocks of sites becomes more scarce.
I'd suggest all members of a specific group all select one of the following areas:
- South
- Infield
- Ring Road
Hope this helps.