Board Thread:Episode Discussion/@comment-25396609-20191102162031/@comment-43749004-20191102175355

Minor detail, but in the OP during the scene where Ironwood is looking at the hologram of Atlas, Amity Arena can be seen floating above it to the left. I assume they brought it back to Atlas either because they're repairing it, it naturally goes from kingdom to kingdom, or, much less likely, they're going ahead with the 51st tournament.