I took my 2 yo boy to soft play today. One reason I like this one is that it has a policy of no photographs (the other is that they have proper coffee). This policy is well signed and is on the "rules" sheet that everyone should read and sign that they have done so. Our little guy is adopted and I can't risk any pics of him posted online. We really don't want the birth family to be nosing around. For all I know the photographer could be friends with the sister of birth dad or something.
Today I saw two different families photoing their kid. The first time I didn't say anything because my boy wasn't in the area but the second time he was. I asked a staffer if I was right about their policy (I was) and then asked her to make an announcement over the PA system to remind everyone.
If people can't follow the rules of an establishment then they shouldn't go. The policy is there for a reason!