Aye voting is compulsory, its a choice between a kick in the balls or a shovel to the face. Either way you vote you lose.
As for the R18+ classification, I expect it will happen in the next year or so. There appears to only be the AG in SA holding it off at the moment.
Still, R18 or not, the price of games here really needs to be looked at. The price point at the moment is still only encouraging piracy for those that don't know how to import or buy online.