The festivities include a performance by Claudi and Marc from Pinc Louds... there's also a variety of food, drinks, etc., from 3-9 p.m. There's a $10 donation for entry.
As for what the fundraiser is about:
We are raising money to install solar panels to power the garden and take us off-grid. The pavilion will also serve as a four-season classroom offering workshops for the community.