Nong Khai is a city in Northern Isaan. The city lies on the western bank of the Mekong River, only 20 km from Vientiane, the capital of Laos.
Nong Khai is a sleepy Thai town with strong Lao influences, and is home to small Chinese and Vietnamese communities as well.
Most locals speak both Thai and the local dialect called Isaan, which is closely related to both the Thai and Lao languages. Many locals speak a little bit of English, mostly tourism-related words, and are generally very friendly and helpful if you smile and are polite.