Trip to Banff, Lake Louise, Jasper: advice?

Thanks Paulj, those sites were very helpful! Anybody else get their 28Ft.+ trailer into Wilcox Creek?? (site recomends under 27ft).
Natl. Info. Services did verify that both Banff & Jasper charge a daily service fee of $8.30/person/day. The Natl. Discovery Pass cost $57.90/senior and is good for one year to all Natl. parks and waives those daily entry fees.