Would you wannabe attorneys please stop trying to make a molehill out of this mountain.
Why did they lease the property? Did they lease it so they could operate as an agent of the County (substitute for Parks & Recs), or did they lease the property for the purpose of making money using assets of the County? (Non-profit or for-profit, if they are making money by using County assets they end up as an agent, if only as one that generates income for the County.)
Either way they are classified as an "authority or ... a local governmental entity, including a department or agency" as enumerated in 15.2-915. Preemption applies.
Cuccinelli's exemption to preemption applies to event-specific rental of local government assets, as opposed to leasing for the purpose of daily operation of the property.
We know an attorney who could be talked into charging what SCOTUS seems to believe are "reasonable" fees in bringing this to court for equitable relief.
stay safe.
This one will be both interesting and educational!