Well some nice friends of DHs are very anti soft plays, not sure why though, perhaps they have some sort of moral objection to coloured balls with the faint odour of pee. They are however very polite and would never, I'm sure, mention it to anyone else.
I love soft plays. DS disappears for at least an hour waving to me occasionally. I do wish however that they offered better catering. Wouldn't it be lovely if there was an upmarket restaurant or bar attached.