tunnel mountain is decent if you stay in village two you gave just power. the trailer court has all three services. I would stay in Banff and drive to lake Louise. it is about 30 to 40 min to drive and the campground in LL isnt the best. you an park your truck in the parking areas and shuttle right to the lake. really one day walking around is all you would need. for Banff there is now a bus service that goes right into town from the campground which I found real handy. I believe there is a bus that goes to lake Louise also if you don't want to drive.
Steve