I'm sure you will get several comments from other Canadians both good and bad. We were in the Canadian Maritime Provinces last year and will not do it again.
Nova Scotia has some very nice scenery but they have just implemented a new policy (Thanks Ministry of Tourism) - it is NOT LEGAL to be parked and asleep
overnight ANYWHERE except in a campsite. Weather is considerably cooler and damper than Ontario/Quebec. We were disappointed with the campsites in Nova Scotia and absolutely disgusted
with the one site we used in New Brunswick. Another point to watch for - there a few if any rest stops and even to stop for lunch en route it is almost impossible to find a place to pull over.
I understand the Scotia Prince ferry between Portland Maine and Nova Scotia is not in service this year and the Cat (Nova Scotia/Bar Harbour Maine has length restrictions - they claim 50 foot total length maximum but we did find out that we could have fitted our rig on it (last year we were towing a Mountaineer 335rls)
Quebec is well equipped for the RV tourist
but be very carefull planning further east with a big rig!
OK Canadians please don't get too upset with me - this is my honest opinion