ABP, while a law is one thing, and a company SOP is another, crew do not have the leeway to say, "well, it's against SOP but still legal". If the SOP says 2 years, that's it. I know children will kick and scream, but they're children... they do that. It's important to be consistent, otherwise pax will be confused and the next crew will have a tougher time trying to implement the SOP.