Wow, truly impressed and again very well written. I have been to Seoul a few times however didn't know about that tour bus (hopefully they have a stop close to the Grand Hyatt or Hilton

. Glad to hear the outcome on your ICN-HGK F to J downgrade was satisfactory. I would have had the same approach with the check-in agent, i.e. you want to make your point across strongly on how dissatisfied you are with the downgrade (and request compensation) however in the most calm, humble and non-demanding way......and in most times the end result becomes positive. Great job!
cheers.