This research proposal investigates the impact of service quality, based on guest complaints and feedback, on increasing guest satisfaction within the tourism and hospitality sector, specifically focusing on diners. It addresses the problem of customer dissatisfaction stemming from inadequate service quality and the resulting negative impact on brand image. The research objectives include identifying the effects of service quality on guest satisfaction, evaluating approaches to enhance satisfaction, assessing guest complaints, determining staff responses to complaints, and recommending measures for service quality improvement. The research design employs a mixed-methods approach, utilizing both qualitative (interviews, case studies) and quantitative (surveys) data collection methods. A Qualtrics survey is proposed for gathering data, and ethical considerations regarding confidentiality and data validity are addressed. Data analysis techniques will include univariate analysis and the use of SPSS and Excel for data representation.