For groups of more than 2-4 people, it is much more convenient and cost-effective to travel by taxi rather than using public transportation.
Professional guides such as tour interpreters and overseas travel guides will conduct tours, and guides that speak English will be assigned.
It is a 100% private tour that doesn't include tourist attractions with an entrance fee. There is no additional charge even if you go to nature-oriented tourist attractions.
If you want to know the must-visit sites on Jeju Island, ask for recommendations because these guides have years of experience and know the ins and outs of the island.