Abstract:
This research aimed to examine the factors of the 7Ps service marketing mix that affect the consumers decision making in using the service of grilled buffet restaurants in Bang Khae District. The study adopted the qualitative research method using a semi-structured interview to collect data. The purposive sampling method was used in selecting consumers from a total of five grilled buffet restaurants, with six consumers per restaurant, totaling thirty consumers. The research found that out of the seven factors of the service marketing mix, five factors that affect the decision to use the service are price, product, place, people and process, respectively. As for physical evidence and promotion, these two factors do not affect the decision to use the service of grilled buffet restaurants