I used to manage a cafe where the owner's wife regularly brought in their two kids. They would open sugar packets, pour the sugar on the table and drop the packets (and all their food) on the floor. The day she came in and sat in the office, shopping online while her toddlers took a giant jar of toffee sauce and mixed it with the contents of our tips jar was the day I put my foot down with my boss. She didn't even try to clean it up, just left. Anyway. I came here to say that it sounds like maybe you just need to find more supportive friends. Why shouldn't you take your toddler and his 7-11 clostest friends somewhere with proper food and a decent marg?