No slacking, just enjoying my time off.
Well, for what the memberships are going for these days, you should make sure you take the time to enjoy all of your parks.
I've worked/stayed at all of them, and they each kind of attract their own crowds.
Lakeshore (Davison) and Saginaw Bay (Standish) are both about the same when it comes to being busy/crowded, but have a pretty good mix of people (older folks and younger).
Rifle River (Sterling) is definitely a much younger crowd once canoeing season starts up, lots of parties, well into the night.
Wilderness (Omer) was mostly an older crowd, and pretty quiet. Lake of the North in West Branch was about the same, but very creepy quiet at night.
If you're planning on going to any of them during a holiday period, make your reservation as soon as you possibly can.
I sold my membership about a year ago (wife and I separated, wasn't using it due to time constraints, and was sick of paying dues every month), but I thoroughly enjoyed my time there as a member. Working for them was pretty good too.