Show the guests of a reservation the same way the owner is shown. Tested: added Huckleberry Finn to Tom Sawyer's reservation and resynced Mews - the reservation does not appear under Huck's info, only the owner's. Surface all guests (marked owner vs. additional) in the RESERVATIONS section. Open question: is Mews already syncing additional guests (a display gap) or is the data not coming through (a sync gap)?