This picture, which was taken on Agfacolor slide film in the mid 1970s, immediately reminded me of the TV advert which used to run in the 1960s. I can't remember the specific product being advertised (so not very effective advertising there) but I remember the jingle which started, 'I like a nice cup of tea in the morning'. That's the first thing that came to mind when I say the picture, closely followed by memories of my father, who punctuated every move with a cup of tea!
There must have been other people in the scene who had gone off somewhere, because as well as the tea cups, there are two cans of coke on the table as well so presumably the children were of playing somewhere. I would suspect this was a holiday snapshot.