Last week, just in time for the prime summer season, the Government of Canada (finally, IMO) got around to announcing a promotion for visitors to parks, museums and tourist destinations. It also applies to trips on VIA Rail:
https://www.canada.ca/en/canadian-he...nada-pass.html
The promo has a a number of limits e.g. ends on 2 September, refunds for existing bookings are limited. But it applies to visitors and includes 25 % off at Parks Canada accommmodation.
NB The fact that is called a pass is a bit of a misnomer i.e. all you need to do is show up.