I feel like I should holler out, "get offa my lawn!" since most of your first experiences as a child occurred after I became an adult.
1971, Los Angeles to Boston with my father and my sisters for a couple of weeks visit to relatives (we used to live there), then on to Florida for a visit to friends (used to live there too). My father and my youngest sister went home after a week, my older sister and I stayed on for most of the summer then flew back to LA alone. At one point on the trip, first class was almost empty and we were put in first. I remember it was a plane where first was in the nose.
Cali