I did a very similar trip to this a few years ago with 5 friends. here's a few things we did that we did for fun, outside our hikes:
- took a gondola, looked for bears
- went to a hot spring/spa thing at our accomodation
- bought and smoked weed in Vancouver cos hey, it's legal!
- went to brewery and got really drunk
- ate in some amazing local diners
- went kayaking
- went biking
- went to some cool museums, including a dinosaur museum
We had an amazing two weeks, we did lake Louise and Moraine and walked loads, but we had downtime in between. We were on a super tight budget. She's not even mentioned any wildlife like the Pikas!!!