This research aimed to study the factors affecting the supply chain efficiency of water tourism entrepreneurs in the Northeast provinces of Thailand around the Mekong River Basin. A questionnaire was distributed to and subsequently collected from 246 samples in 7 provinces including Loei, Nong Khai, Bueng Kan, Nakhon Phanom, Mukdahan, Ubon Ratchathani, and Amnat Charoen by proportional allocation and convenience sampling using Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) by ADANGO. According to the results, it was found that customer orientation directly affected the supply chain efficiency of water tourism. Knowledge management directly affected the supply chain efficiency of water tourism and supply chain marketing implementation capability as a transmission factor for the supply chain efficiency of water tourism. For these reasons, water tourism entrepreneurs should focus mainly on customer orientation with full-service efficiency. Internal management should be planned as well, e.g., communication training, service training and cultural revitalization of communities around tourist attractions through cooperation with involved agencies, which will enhance the supply chain efficiency of water tourism.

The objective of this research was to investigate the impacts of the perceived service quality on passengers’ satisfaction towards the service quality of the Nakhon Phanom Municipality, Thailand - Thakhek, Lao People's Democratic Republic ferry. The sample group comprised Thai and Lao passengers who used the ferry’s service. A questionnaire was used to collect data from 505 samples who were selected using the simple random sampling method. The collected data was analyzed using the confirmatory factor analysis (CFA), structural equation model-ling (SEM), and partial least squares (PLS) regression with the ADANCO 2.1.1 software. The results showed that the perceived service quality consisted of tangibles, reliability, responsiveness, assurance, and empathy, which had the same impact with the passengers’ satisfaction towards the service quality. The most influential factors were the tangibles and responsiveness. Therefore, entrepreneurs should priorities the improvement and development of the ferry’s tangibles. Furthermore, the government sector or relevant agencies should promote the implementation of technology into the development in order to fulfill the passengers’ demand and create an impression that would lead to satisfaction and repurchasing.