The planetside production complex hosting the warlord council, entered through a menu-stripping teleport.
Carl and Princess Donut arrive with a system notice reading 'Entering Production Facility.' The transition snaps off all of Carl's menus, pops his ears, and brings a quick, strange nausea strong enough to put him on the couch. The waiting room they land in is a small chamber with a couch and a counter scattered with playing cards — the same counter Ferdinand ricochets off and later sulks on when no snacks appear.
The facility is earthbound rather than orbital, which makes Carl wonder why the gnoll guards conducting The Security Check are wearing the same gear they wore on the space station. Zev teleports in with a splash of water, delivers the news of The Aryl Blackout, and then her info pad beeps: refreshments are waiting at the meeting, and it is time to go.
A small, bare chamber with a couch and a counter, doors that seal behind armored guards, and a teleport pad that strips arriving crawlers of their menus.
Neutral ground on Earth where the warlord council convenes.
Also appears in books you've already read — spoiler-safe to their endings: