We spent 6 weeks in the Maritimes last summer. We found 30 amp service most frequently and didn't miss having 50 amp, even tho the past summer was unusually hot. Summer weather ended abruptly after Labor Day.
No one has mentioned the Gaspe, which is the eastern end of Quebec, but we found it even more wonderful than NB, NS and PEI. Don't miss Parc Forillon, Parc du Bic, and Parc Ile de Bonaventure! Since we enjoy boondocking, we had the pleasure of spending a number of nights along beaches and wharves. I sure miss the sound of the Atlantic and the great Acadian music. Ahh. We do want to return. About border crossing; no firearms and that includes bear spray/pepper spray.