We expect 800 people in total but families will attend at staggered times throughout the event, not all at one time.
We would also like to use the small gym if any part of it becomes available on that date. 
We plan to serve a meal, have activity stations for families, and distribute some holiday bags to attendees.
All will be families and volunteers we sign up for the event, it will not be advertised for unaffiliated members of the public to attend.