Class C Rocky Mountains ??

Think I would only use cruise control on the flat and moderate terrain roads, for hilly/mountainous areas I'd put the transmission in tow mode and on downhill stretches make sure you're not using the brakes very much. I think that travel is still limited from USA to Canada and vice versa, but you will have to determine what is allowed now. It's been awhile since we camped in the Banff and Jasper locale, so will defer to other respondents for up-to-date advice; it certainly is beautiful country though and well worth the trip.