Is “played nonstop all day“a metaphor?

No

Explanation:

It has no in-depth/secondary meaning. It’s just highly informal and would probably be marked wrong if you wrote it for your teacher.

I would suggest something simple and actually accurate, like “Beth played all day.” and just leave it at that.

explanation:

if you’re a fan of chocolate, every occasion is right for this treat. feeling down? eat some chocolate. celebrating? eat some more. want to show your valentine how special you think your sweetheart is? offer up chocolate!   people have been enjoying chocolate as a food, drink and medicine for thousands of years. the ancient maya and aztecs called chocolate kakaw and used it as medicine. they also made chocolate offerings to their gods. chocolate comes from the cacao (kuh-kow) tree, and its scientific name reflects its history. theobroma cacao translates to “cacao, food of the gods.” these days, chocolate is not just for deities. the treat has become popular around the world.