Depending on the time of year you might catch a great sunset over the Rockies.

Eating: I can recommend the Cactus Club on Barlow for a decent bite to eat.

Go shopping? Nah, you'll just have come from Vegas. Deerfoot outlet mall has nothing on the stores in LAS and. Sunridge Mall is also close.

In the airport you could head to the YYC MLL if all else fails. Or set up a YYC mini-do. I've never been but there's also "Spaceport" in the airport. Open to 9 pm.