Jasper and Banff in three weeks without reservations

luckyd wrote:
Be aware that there is NO LEGAL BOONDOCKING IN
NATIONAL PARKS. (unless posted)

Yep, but Hinton has legal dry camping in the parking lot of the Walmart-Safeway shopping center. We did it on our way from Grand Cache to Jasper when we arrived a day earlier than our reservations for Whistler's began. Hinton is a great place to do laundry, get some groceries, eat some restaurant food, and fuel up before going into the national park--all which we did during our one-day stopover.