i have been saying to DS alot lately that we have rules in our family and other families may not have the same rules, so in our family we need to ask first before taking something, others dont have that rule but it is really important you remember OUR rules.

in the case of the play house i would say to the parent, do you mind asking the boys to stay out of this area as it is scaring DS and this is a designated area for under 5.
the socks.. pfft.. my kids often wear shoes with out them so i dont pay attention to that rule.