There may be enough people coming that I'd charge enough to cover expenses and have it catered and get a large tent + tables/chairs. There's a local mom & pop grocery store that does catering. They want slightly less than $10/head for a pretty extensive spread.
That would leave more time for BS'ing.
Still trying to figure out all the details! Don't know what time to start it either. 8? 9? 10?
