In Canada (or maybe just Ontario? I’m not sure if the guidelines are federal or provincial), they didn’t start recommending 2 doses of the MMR vaccine until 1991 or so, if memory serves. So I think it was generally recommended that anybody vaccinated before 1991 get a booster. I have the worst memory in the entire world, so I don’t even know if I ever got my booster or not. I probably should have, before my kids were born, but I honestly have no recollection of that period (I blame it on the extreme sleep deprivation that I suffered immediately after that period).
