TenOC,
If you come in early June you will need your winter woollies. Expect snow and/or rain (and more rain).
Fill your fuel to the gills before entering Canada.
BC Provincial Campgrounds are wonderful--but do NOT have power.
There is a Campground at Sparwood BC that I love (with power, and wifi iirc). The town has a display of the "worlds largest truck".
Some areas will NOT have cell phone service. For example from Radium Hot Springs to Lake Louise. It is possible that roads may be closed due to an avalanche (snow) but the highway department is efficient at clearing such blockages.
Buy fuel at the town of Crowsnest before you enter B.C. It may save you 30 cents per (US) gallon. The same is true of Lake Louise.
There is very little in the way of boondocking locations on or near major highways. In B.C. there are some on logging roads--but I'd not dream of going to most in my class C.
Things to see and do in no particular order:
https://frankslide.ca/https://tourismfernie.com/accommodations/camping-rv/mt-fernie-provincial-parkhttps://www.pc.gc.ca/en/voyage-travel/promotion/sources-springs/miette/https://www.scenic.ca/our-ships/our-space-ships/scenic-jasper---opal---amberhttps://northernlightswildlife.com/https://headsmashedin.ca/ This is a World Heritage site.
https://www.albertaparks.ca/parks/south/lundbreck-falls-pra/information-facilities/camping/lundbreck-falls/https://www.hotsprings.ca/radiumhttps://www.chateau-lake-louise.com/dine/afternoon-tea/https://en.wikipedia.org/wiki/Moraine_Lake It is a hike to get to the actual lake. There is a good restaurant in the resort area. Try the Monte Cristo sandwich if they still make it.
Depending on your time frame (If you come in the fall)
https://shuswaptourism.ca/festivals-and-events/adams-river-sockeye-salmon-run/Towns to visit:
Revelstoke
Golden
Cranbrook
These are just a taste of what is on offer. I hope you will love your visit to the North.
