A no alcohol rule is not a problem. Greed (a strong word, but does anyone know a more "politically correct" one) is a BIG problem.
At two of our last four tourneys, girls were hit by heatstroke. Watching a girl go beet red and start to sway on the field is a very lasting impression. I do not want to repeat it.
Anyone can feel free to go through my cooler, which will be packed full of water and Gatorade. (You know what, I will even buy Gatorade on-site!)
But if bringing cold water on-site to keep our team hydrated is a problem, there are two solutions.
The facility is welcome to provide unlimited cold water to our team, including coaches. That will solve the problem from my perspective.
Otherwise, if the goal is to create a media event (i.e., girls passing out on the field because of the "only buy it here" policy), then let's make sure that the media is there to film the event. I will even pay for the camera crew to get into the facility!
Maybe bad publicity will do what sanity can't accomplish.