With nearly 200,000 KRW (US$150) in each per-capita card transaction, Vietnamese tourists spent the most among international visitors to South Korea in 2022, according to credit card and financial service company BC Card.
Source: VNExpress International,
https://e.vnexpress.net/news/travel/vietnamese-top-international-tourists-in-card-spending-in-south-korea-4600851.html