Glacier is fantastic. We spend quite a bit of our summers down there and camp just outside of West Glacier at Lake Five Resort. We love that campground, but it is more of a family place because it is right on a warm lake with a beach.
There is a lot to do down there. And there are many good hikes in the Park. Always take bear spray.
I wouldn't hesitate to drive the Going-to-the-Sun road. I don't like riding in vehicles though, and we prefer to go at our own pace. I drive the Sun road 6-10 times each summer as I need to come back to work. Watch for animals and take your time. If you do camp on the east side and drive the road, make sure you keep going past the summit as the most scenic part of the road is on the west side.