SIM, eSIM & money exchangeSeoul
Money & exchange
Cards are widely accepted; keep some cash for small vendors.
Credit cards work almost everywhere, but markets and small shops may prefer cash (Korean won, KRW). Myeongdong and Itaewon have many exchange booths, often at better rates than the airport. Rates change daily and are to be verified.
#KRW
Travel details change — always reconfirm time-sensitive info (hours, prices, phone numbers) with official sources.