I'm making one edit to my most recent post. It's basically to catch the leader of the mercenaries in his words. If he's so honorable, he wouldn't countenance the theft of Gond. Thought of that after getting offline.
Yes, I'm fully expecting Amroth to thunder in at any moment. Raefindan will be in the midst of telling Ravion and Erundil to start after the merchant, while he stays in the area to recover Mellonin (he hopes) or be picked off by the swamp elf (he hopes not).
Ravion may protest, unsure whether to go after Gond or stay to look for Mellonin. He may trust Erundil to handle the Minas Tirith part of the quest on his own, eh?