Hi Victor, 
Only a day after I return to mainland Korea, I miss hiking, snorkling, wandering through folk villages and sipping fresh green tea. I had an amazing few days (too few) on your tour, and I really appreciated that you gave us a choice -- took our suggestions, and offered post-tour suggestions. My absolute favorite locations were: Emerald Bay (cliff?), the cave -and beach-site where we caught a peek at the women free-divers, and the first snorkling area. 
I also miss the between-site drives - where I caught my breath after hiking up and down the trails, and enjoyed the streets and back-alleys of Jeju. 
Thank you sooo much, and like Wolfgang, if I can, I will definitely come back to see a different season, and side, of Jeju. 
--- Brie