BA seem very good about this sort of thing. I flew LHR-PHX with them...somehow ended up in 60 A after a check in problem (caused by MY confusion) ...On arrival - being so close - I couldn't resist asking a FA if she'd mind taking my camera and getting a flight deck photo or two... She happily agreed... but then came back literally seconds later and said that "wasn't good enough for the Captain" lol... And invited me in. Yes... they sat me down in the right hand seat (Captain was still in his) and took photos and we had a very nice chat. I was deeply impressed because I'm sure they all just wanted to get off the aircraft!
Kids of all ages indeed!