"Refrigerate after opening".
why? 15 years ago ketchup, HP etc never had that little silver foil on top and you didn't have to keep it in the fridge then. Basically ketchup is tomatoes pickled in vinegar, but you don't have to chill onions, red cabbage, cucumber, walnuts, cauliflower (picallili) or eggs. Its just a marketing thing chilling it makes it sound fresh, same applies to sunny delight.
Note never touch sunny delight