There was no need for Gerry and Kate to leave those kids alone however far away the restaurant was from the apartment. They were on holiday with a group of friends who also had children, were their kids locked up in their apratment alone as well? if so why haven't they been charged with neglect? It was 7pm on a hot summer evening and they were on holiday those kids should have been outside running around not shoved to bed. If the McCann's wanted some time alone they had plenty of friends they could have asked to babysit. It makes you wonder if it wasn't the first time that they had left their kids alone, but I guess we will never know until Maddy is found.