What is your profit margin on your soccer leagues? How about the margins on birthday parties or instructional classes? What does it cost you to rent a field for an hour in a prime time slot? If you can't answer these questions, you may not be making a profit; you may even have negative cash flow, which means you are in big trouble.
AEDs can save lives, and not having one could open the door to liability, as court systems have begun giving leeway to these devices.
Many sports facilities have concession areas for customers to buy food and drink, but running a concession stand shouldn't be an afterthought. Rather, it can offer yet another way to attract steady business.