South Korea in the autumn is hard to beat. The mountain trails turn bright red and orange, the weather cools down enough to walk for miles without sweating through your shirt, and you can bounce between neon-lit night markets in Seoul and quiet ancient temples in Gyeongju.
Timing that trip right takes a little cash management. If you are looking at the typical $3,200 price tag for flights, food, and places to stay, you might want a way to spread those costs out without paying extra just for the privilege.
Remember that the 0% intro APR for 15 months on purchases and balance transfers is a hard deadline, not free money. If you still carry a balance when those 15 months end, the remaining amount will start racking up interest at the regular rate.