I believe Clara is going to get food for the teachers volunteering and she did want snacks for the parents and families (I would seek some clarification on that). I think just having all of the tables out in the cafeteria will be fine for the night! Furthermore, there will be childcare available for parents that have younger kids. This will be a movie, arts and crafts, and games in the media center. The tables just need to be out during that time!
Let me know if you need anything else from me!