At San Francisco Airport, I realized I'd left the train tickets at home, but fortunately, we had guests who were staying in the house while we were vacationing. A quick phone call to them found my train tickets, and we proceeded to arrange for those tickets to be mailed to our last AirBnB stay in Iceland.
We'd arranged the trip to Iceland for several reasons: first, it was a relatively cheap direct flight, at a time where direct flights anywhere to Europe were expensive. At the time when we'd booked the flights, we didn't know how poor an air traveller Boen was, but we were doubly grateful for minimizing time on a plane when we did find out on our trip to Japan.
Wow airlines is particularly picky about weight of carry-on luggage, but fortunately, they waived the EOS M3 camera bag, which would have put us over the top. Since the car did not have space for the bike (and it would be wasteful to cart it all around Iceland anyway), I tried to find a place to leave the bike. Prior to leaving for Iceland, I'd done an internet search which noted that the Iceland airport had a left luggage office. It turned out that that was for the domestic airport, not the international airport (who would have thought Iceland had both!!)! Fortunately, someone at the airport told me that the Geysir Car Rental office would accept left luggage for a daily fee which turned out to be reasonable.
The car rental offices all turned out to be walking distance from the airport, so I left my family at the waiting area, rented the car, came back to fetch the bike box, dropped it off at Geysir, then came back to pack everyone else into the car. The whole affair took an hour, after which we left for our AirBnB in Vogar.