3 days in Banff doesn't seem *that* odd. Yeah, sure, you could spend weeks there, but 3 days isn't an abnormal trip. You've actually picked a good time to go...

During the late 90's, back when airline competition was a real thing, I'd take weekend trips to Europe fairly often. Out Thursday, back Monday. 3 solid days in whatever city it was. It actually didn't feel all that rushed...