At 27, I don't consider myself young for traveling but since I dress pretty casual (travel pants, sneakers and t shirts) I get questions about being in the "correct line/seat" all the time. Never a problem to show my BP, so all good.

The only time I thought it was annoying was when I ordered a Jack and coke siting in first and the FA asked me for my ID. Come on, she didn't ask anyone else in the cabin for their ID to get booze.

And then once when going thru the BP check at TSA, the officer asked if I wanted a gate pass so my parents could one with me to the gate. He was an older guy and said he thought I was under 18. I though it was pretty funny and took it as a compliment!

Maybe I should start dressing up...