Yes. I am planning to sign up for a tour of the Columbia Ice Fields. I am now deciding if i want to rent a car or sign up for mini-tours where I don't have to worry about transportation.
For Banff Gondola/Hot Springs: I don't necessarily need a car.
However for Lake Louis/Columbia Ice Fields/Surprise point etc - It might be better to have a car or sign up for one of the tours. The hop-on-hop off service doesn;t start until May. So, I cannot use that.