Being in my early 40's I'm never sure which generation I fit into but I was raised to be polite. Always hold the door, offer a seat to a lady and say Thank You and Please as much as possible. There's no harm in doing any of that, kilted or not. I guess to me it's all just a part of being civil to the people around me. So, thank you for giving up your seat - it's a gentlemen's thing to do.