There are a dozen or so watering holes around Lake Louise itself, but most are part of the various accommodations and some distance from one another so this is not the place to go if you are expecting full on night life. That said, an evening out in Banff is perfectly possible and there you will find the main street lined with bars and clubs.
At the base of the slopes at Lake Louise itself the Kokanee Kabin is the place to be when the lifts stop running for the afternoon, it’s usually busy and there’s often live music at weekends. The Powder Keg Lounge within the Ten Peaks Lodge is also open until 6pm. In the base village the Outpost Pub in the Post Hotel is one of the livelier choices, or the Glacier Saloon in Chateau Lake Louise
One popular option, ambitiously billed by the ski area as “the ultimate après ski party” is a combination ski-drink-ski-eat-shuttle back home to bed session staged weekly from mid-December to the start of April. The evening begins as the lifts close at the end of the ski day when you meet at the mid mountain Whitehorn Lodge for drinks and appetizers while a band livens the atmosphere with music. It’s then first tracks down a freshly groomed run to the Sitzmark Lounge for a huge feast and more live entertainment.