Hello people

As the Event Manager of my FC I have a question:
Something on my "to do" list is a Gold Saucer evening doing the GATE's that GS provides. My biggest problem however is the downtime between these mini-events. I can't for the life of me figure out what to do...
I've thought about a small "hide and seek" but that seems tedious with the constant having to move about between event locations.
I've also thought of a "find this screenshot" (scavenging-hunt-esque) but I feel there's too much that looks alike in the GS.

Can anyone help me with some suggestions on what to do during the downtime?

Cheers