My first flight was JFK to SFO on an American Airlines DC10 back in the mid-70's...I was 12... This was at the end of a month long driving tour of the US. I'd never been on any kind of airline before so that DC10 looked HUGE!
I remember dressing up for the flight in my best dark blue polyester slacks (remember when people dressed up for air travel?) and the Captain doing the
PR walk through the cabin during the flight...