Camping at Flip is a amazing. Beware that there are two tourneys coming up:
Aug 14 Farm Classic and over the whole Labor Day weekend the State Finals. This will also be held at all the Ludington courses.
There is a campground RIGHT across the street from the entrance to the Mason County Courses. Kind of "eh".
I suggest, if camping is a priority just as much as disc golfing, do the Ludington State Park. You can even camp in the dunes. It's four miles north of Leviathan. Eight north of the three Mason County courses, and about thirty odd miles north of Flip.
Silver Lake, directly west of Flip, and on Lake Michigan is another incredible camping area. Although tends to be a bit touristy.
Hope that helps.