East Tawas is a place I've visited most of my adult life. There's some walking trails here, the lighthouse is a close walk/bike from anywhere in the park. Getting to town is a few minute drive, or a very long bike ride on the road.
Like most Michigan State Parks, your site has electric (30/50) only. Water spigots are located in various spots throughout the park. I advise you fill your freshwater tank at home, or when you arrive, at the dump station.
There's a few ADA sites with concrete pads, all others are grass. Comfort stations are in good shape.
Beaches are, like most in Michigan, eroded due to high water levels, but still useable.
You can watch sunrise on the Lake Huron side, sunsets over Tawas Bay.
I've never really interacted with staff here, but never needed to. Park is clean. There can be lineups at the dump station.
A few sites are pull thru. Most back-in.
If you have a vehicle, there's many places to see in the area, like Lumberman's Monument. Tawas has a nice farmers market, worth a visit for fresh veg and other items.