We’re not referring to credit cards, but transportation cards. Don’t be afraid to take public transport because it is a lot more convenient than it sounds. If you buy the T-money card (Korea Transportation Card) or Cashbee card, it can take you on all modes of public transport such as buses, subways and even some taxis. These transportation cards are easily available at convenience stores, including CU, GS25, 7-Eleven, Ministop, With Me, Buy The Way and Story Way. T-money cards are also available from ticket-vending and card-reload machines inside subway stations. They can be easily topped-up at these locations.
They can be used not just in Seoul, but also other metropolitan cities and locations throughout South Korea. Besides enjoying discounts on rides during transfers from bus to bus, subway to subway, bus to subway, or subway to bus (within a transfer time limit), you’ll also save yourself the hassle of having to purchase a single-journey subway ticket for every ride. You can easily pick up a transportation card when you arrive at the airport (at one of the convenience stores). When it's time to fly back home, just return it for a refund on the balance. Or, you might even want to keep the card, as some of them have unique designs (especially the limited-edition ones) and make good souvenirs.
Hotels in South Korea are relatively expensive, so staying at the home of a local might be cheaper than getting a room in a hotel. Also, you might have access to laundry facilities so you don’t have to pack so much clothing. The other alternative is staying at a backpackers' hostel. Some are actually quite nice and comfortable.
