A talent show for the universe?
Lex's announcement reached everyone who was at the Inn, even the recovering Marlo. It immediately attracted their attention, and they all started concluding their businesses. Letting them conclude or pause whatever they were doing was also primarily the reason Lex timed the invitation to an hour later.
In the Recovery room, three of the guests who had accompanied Will were being healed in the Recovery Pod(RP), but they would be done soon due to the upgrade the Recovery Room received. Even Marlo's recovery had sped up, but the root of his issue was not an existing energy but the unstable nature of his blood. That was something he would have to solve himself, but what the RP was doing was healing his vitality. It would not take long for that to completely recover, at which point Marlo would be able to leave.