City of Berkeley's summer Playground Program

Have anyone ever signed up your kid for the summer Playground Program through the city of Berkeley? Held at various BUSD and city park locations in the summer (such as Rosa Parks, Malcolm X, Grove Park, and so on). It's only $5 for a week of "fun and games" from 11 a.m. to 6 p.m. I am considering signing up my kid but I only know of one person who's done it before, so I would like to hear more feedback first. Why isn't this program well attended? (There are lots of spaces available but many of the other city-run camps are sold out.)

Low-income families have priority registration but it is open to everyone in the city. 

Note: This is not the same as the "Super Fun Camps" as the Berkeley Community Centers (like Frances Albrier, James Kenney, and Live Oak).