I have a free year subscription to it for the same reason. It's a newer service so there's not a ton of original content yet.

When scrolling the list of their included content I did see a fair amount of children's shows, I don't have kids so I didn't study them closely but there was one Charlie Brown special on there (The Great Pumpkin). There was also a Fraggle Rock show. Again, I didn't look that close.

I've only watched one Apple TV+ original on it so far, Greyhound starring Tom Hanks, it's a WW2 movie where Hanks is a US captain on a destroyer escorting merchant supply ships across the Atlantic to protect them from German U-boats that are trying to sink them. It was a good solid movie I'd say 3.5 stars out of 5. Good action, perhaps a little light on character development outside of Hanks', it's pretty clear his role is where 99% of the focus went (which is understandable, he's Tom friggin Hanks after all) and the side characters remain fairly unexplored and two dimensional.

Otherwise it's similar to Amazon Prime. Some content is included for free with the subscription but you can also rent or buy movies.

I wouldn't pay for it because it's nowhere near as robust as Netflix or Amazon Prime at this point but since it's free there's no harm. It's easy enough to cancel so that you don't get charged when the year expires. If you don't even want to go that far and just skip the free trial you probably aren't missing much.