This park is getting a £20 (US$30) entry fee for a play area. It’s in an interesting part of town - posh one side of the street, not posh the other. The overall park is a public park, with a paying zoo in it. Famous park.
Personally, I find this deeply offensive, and intensely divisive.
I rather suspect there might be some damage to the lovely equipment as people get a little cross about the whole thing.