Kian;...We have Clifton Gorge,you guys have the Grand Canyon,[something for everyone].
Glacier is a pretty place,waterfalls,grizzely bears and Mooseies in the lake. Canadian Glacier continues to the north.[there is where they dump all of the bears which have been being bad over in Banf],mostly mooching food and hanging out in campground, that sort of thing. Geting too cozy with the tourists is NOT condoned by the Rangers.
Definitely take your camera,there is picture postcard scenery for 160 miles north from Banf before you run out of road. Be sure to see Lake Louise,the first town north of Banf. A big old chateau style hotel by the lake with snow caped mountains at the other end....FANTASTIC!!!
I have never been through Calgary at the right time for the Stampede but am told that it is quite an event. I am sure you and your OH will enjoy every bit of the trip. Let us know how it goes.....Rock On!!!....Richard