I just thought of this, and kind of feel bad that I havent before, but I always say sir and maam to adults, but here I dont. I guess i feel it doesnt matter. To me it would sound weird if I said 'Great shot Mr. Jack! (or whoever)'. Everyone here is older than me basically, but i basically dont treat anyone differently because of age...is that bad? Here it just seems different. Sometimes adults dont want to be called Sir and Maam, but just by their first name. What do you 'elder' (but not old, of course ) people think?