I have a basic position on this, I take a balcony at a premium cost because I can open the door whenever I like, I can stand out there and smoke if I like, I can watch the world go by if I like. If I wanted to be totally environmentally friendly to the rest of the ship and its AC then I would take an inside cabin or one with a portal. Or the other way to look at it is, if it was such a problem then the lines would build climatically controlled and totally internal cabins and no balconies! They dont do they
No, I pay their premium and so its my call as do I leave the balcony door slightly open for fresh air or not? My premium so my comfort or choice.
When I fly business class, do I worry that others on the same plane dont get the same leg room, seat size or meal or service as me, no.