Thanks all. RTW1, to position to NRT does not just require a one-way ticket, of course (after all, the couple is not moving there), but it will require a round-trip. That said, I may try to convince them as the price difference is so substantial. Also, you mention that two round-trip tickets can accomplish the same itinerary for less cost? It's not clear to me how I would construct that -- can you enlighten me? Thanks again for your help!