Several things.
1. Take Logan Pass. It climbs the mountains in the middle of the park and it is breathtaking.
2. Cross into Canada and go to Waterton. It is so cool. What used to be one the largest wooden hotels in North America, the
Prince of Wales Hotel. It is a beautiful place with a huge window looking down the lake. Lots of cool shops. When I wen there, you could drive up to the hiking area and bighorn sheep would walk up to the car and stick their heads in the windows.
The Hotel is in the foreground
Another shot:
I drove up to Glacier ten years ago. It is still one of the most beautiful places I've ever been. The rolling hills, places to hike and fish, tons of horses and barns, magestic mountains...I could go on and on. You and the family will love it.