Andrea's Caleb was obviously there and god he tried very hard to play host. He definitely vanished at some point to hide in the ship for like 5 minute periods, don't judge him too much please. But he did try to put himself out there to the parents that came and socialized as much as he could possibly handle!
Yasha was there and she loves kids & is pretty good with them, so was on hand for any child wrangling and herding as needed! She's not hard to spot, and would have dragged Beau into the flying tunnel at least once. And again after everyone is gone
Gansey came with the Gangsey and brought a gift of ARTS & CRAFTS. he loves arts and crafts, so she got all sorts of little things from paints to markers to those fun shape punch hole things.