Since Istredd put this together, he obviously has to stay visible during the event itself. If people decide to get there early, they can catch him clearing up notes/adding little details onto the blackboards before everyone arrives. He may also be mumbling at the leosylphs and ravens about being on their best behavior for everyone, and/or creating furniture for the space.

After speaking he steps to the side so others can add if they want and gives them his rapt attention. He prepares the food and drink set up with Wanda's help. After that he is easy to spot in the main room, standing quietly and probably looking uncomfortably formal.

At a point in the night, he disappears along with a few other people for a secret conversation. Istredd may take moments here and there to himself, walking into some of the shelves on the second floor to catch his breath and be less stared at. He will say goodbye to people if they wish to before going, and cleans up rather easily afterward considering it's all in his head. If people want to linger for one-on-one conversations, he will be there.