I know that in 2017 enter to NPs are free. In 2008 on my trip to AK I drove from Banff to Jasper and stop to see Lake Louise. I did not camp in the NP and only stopped for lunch at Lake Louise. I do ...
My understanding is they will give you a free pass at the toll booth if you do not get one on line. They want you to get one on line to speed up the entrance process.