South Korea is an affordable travel destination with a well-developed and inexpensive transportation system, affordable food options, and plenty of free or low-cost tourist attractions. Accommodation can be expensive in major cities, but budget-friendly options like hostels and guesthouses are widely available. The nightlife scene is vibrant and diverse, and the country is generally safe for tourists. It's recommended to exchange money at the airport or in the city center to get a better rate, and it's always advisable to take precautions like keeping your belongings safe and avoiding dark alleys at night.