Any must do things? Restaurants? Shorter hikes (under 4 hours)? Shops?
Banff Ave Brewing: has really solid beer, folks are great and the food is good. Fun pool table on the back, my son has a blast playing with the seasonal folks in the winter (The female Aussie/Kiwi ones in particular)
Farm&Fire: inside the Elk+Avenue hotel is great
The Maple Leaf - slight lean towards touristy, but OMG are the steaks and seafood good. Oysters in particular. Excellent wine selection too, if that’s your thing. Helpful if work is footing the bill.
Una Pizza - I know, part of a (small) chain, but really solid pizza and a fun little place
Worth the drive and an overpriced lunch at the lobby restaurant at Chateau Lake Louise for the view.
With the exchange rate, shopping anywhere in Canada is pretty good for a $USD shopper right now.
Can’t add to the hiking as I have mostly been in town in winter, but the upper bow would be on my list if I was there in September.