Yes and it is WONDERFUL! We go once a year just to camp and look at the stars. Just be sure to check their calendar of events if you want to avoid people… their events are fun btw!

Yes, it is a lovely spot! Fairly dark skies, at least to the west (Mackinaw City to the east makes that side a bit bright).

You’re already kind of near there but I prefer sleeping bear like 40 mins to the SW. you’ll get the lights of Traverse City a little bit more than you do Mackinac city but it’s just an overall easier experience for me. Anywhere you can find a dark spot at sleeping bear you’re good to go. I like the Dune climb parking lot or the place across the street, the Lake shore picnic area.

Here’s a pic I took from sleeping bear.

I haven't been but I love Cherry Springs in Pennsylvania. Actually caught a shadow at my feet from only the milky way there, on a moonless night. It was magical. Check it out it's a state park built for astronomy and the only dark territory on the east coast.

Been there once, it's probably fine for just looking at stars and stuff. But don't go there trying to see the northern lights, because there's no north-facing area.

There is an observation area on the shore of Lake Michigan where you can look out (as opposed to looking straight up with tall trees on either side of you), but that observation area faces the other side of a small bay. And that side of the bay isn't part of the dark sky park, so there are definitely lights along the shoreline.

Still, though, it's probably the best dark sky you'll find in or even around Michigan, except for the one in Pennsylvania.