The visa policy of South Korea allows citizens of certain countries to enter South Korea without a visa (Korea Electronic Travel Authorization or without a K-ETA at all.

Jeju Province, officially Jeju Special Self-Governing Province, is the southernmost province of South Korea, consisting of eight inhabited and 55 uninhabited islands, including Mara Island, U Island, the Chuja Archipelago, and the country's largest island, Jeju Island. The province is located in the Korea Strait, with the Korean Peninsula to the northwest, Japan to the east, and China to the west. The province has two cities: the capital Jeju City, on the northern half of the island and Seogwipo, on the southern half of the island. The island is home to the shield volcano Hallasan, the highest point in South Korea. Jeju and Korean are the official languages of the province, and the vast majority of residents are bilingual.