Starting a new tournament.

Starting a new adventure with the kids in Buena Vista, but this time with the ages of 10 to 13, we have 25 kids in this tournament, 5 teams of five all playing each other. for the champions will be having a party where we will have McDonalds for the winners something that they haven't had before.
When we told them they were so exciting and we invited kids from all the village they show up on time the first day and we organized the teams making one kid a captain and gave him a responsibility.
they love to be captains but they don't know how. I had to set so many rules and some time they don't agree with the rules but they love them hahaha. We have to be very strict about the rules and we had to send two kids home.  My wife and I wonder what they think about us...do they hate us for that or what!!!! but next day they came back and ask me if they can play, I told them on next tournament.
I feel they love to play but they don't know how to behave and respect others, we belive that every day God changes their hearts.
Every day we start with a devotional and all the kids must be on time because if they are not they will miss like 3 or 4 minutes on their game. hahah Julio and Elvis came late and ask me why and I told them the rules and they had to sit down and the other team score 2 goals and they were upset, you could see it in their eyes but they told me at the end of the game that they won't miss next time the devotional.
Please help me pray for these kids that God will break down the wall that doesn't let them see how nice and peaceful  is to be in the light.