I was born in 1963. Only one family I knew regularly had fizzy drinks or orange juice: in our house those were for parties or special occasions only. Most of the time we drank water or cordial. Then something called Sunny Delight was introduced in the 70s and became very popular. It was an orange-flavoured drink with around 2% concentrated juice and a massive amount of sugar. It became a favourite drink here in the UK. My family was quite hard up so we never had it, but friends' families did. There was a programme on Radio 4 about it which is the only reason I know this:
https://www.bbc.co.uk/programmes/m001v3z4
In the early 70s my mum used occasionally to buy a small frozen container of concentrated orange juice from Sainsburys and dilute it at home. This stuff — made from concentrated orange juice — was the kind of thing served as a starter in restaurants in tiny glasses.
In the late 70s 80s orange juice as we know it became common in supermarkets at a price more people could afford. Apparently Sunny Delight was available until the late 90s.
I can also remember my mum bringing home a strange exotic red shiny vegetable* from the market in the late 60s and no one having the faintest idea what to do with it. I think she eventually cut it into slices so everyone could have some and served it with with salad cream. That was my first ever red pepper. Don't get me on the subject of yoghurt, which arrived at some point in the 1960s and was very strange and exotic...
Crikey, that makes me feel like 160 instead of just 60. It was a different world, OP. And when you're my age, now will feel like a different world too.
*I know a red pepper is actually a fruit. We thought it was a vegetable.