As other threads (like the grandparents as babysitters thread) state...
When you have kids, these are things you consider. It isn't up to any organization to have to worry that you have chosen to have multilpe children and then plan their activities so that the multiple children are in all different quadrants of the town at the same time.While I am not a single mom, I have had roughly--2-3 years (can't calculate it at the moment) where my husband did not live with us. I'm one to not pull favors. So what I did was PLAN our activities accordingly. While my kids would have loved to learn to ice skate, it was simply too far away, too expensive, and it conflicted with other places we needed to be for the other things they liked to do.
It's funny how on one thread, we can't depend on grandma to bail us out--but here, we expect society to pander to our choices.
At least, that is how it comes across as me.
The "but I'm single, but I have 12 kids, but I do this or that" mentality is not the organizations responsibilty.
The OP-typically does not accept ANY place that demands him to observe his child because he is a free ranger. I would bet that he would have an issue that his 5 year old could not run around in Fantasyland at Disney by himself because he finds the 7yo rule too restrictive.
IT is far easier to call my opinion lacking in common sense than it is to see where I am coming from. For every excuse, there is a choice.
No, your child "doesn't have" to play football. He enjoys it and you may bend over backwards for it and LIKELY--if the league had such a rule and was unyielding, you would alter the rest of your children's schedules to accommodate it. That is what usually happens.
You cannot force an organization to accept more liability than they are willing to take.