One of the folks who helped out getting the letters was able to make it for the Grail handoff (now in The Yarnies as Chimerrata). This is that account.
People in attendance were given Grails (multiple fakes on the table, one real), shouted "operation Galahad", and scattered. At least for our intrepid on-the-scenes reporter, the grail was a fake - carafe inside.
UPDATE: Charity is currently at the Yarnies booth!