How people want to feel, known as ideal affect, has been considered a key concept to predict tourism behaviors generally, and sport tourism behaviors specifically. Thus, this study examined similarities and differences in ideal high-arousal (e.g., excited) and low-arousal (e.g., peaceful) positive affect across international sport tourists, domestic sport tourists, and sport excursionists. A total of 449 Japanese people who participated in masters games within the past three years completed an online survey. The results of analysis of variance (ANOVA) were significant only for low-arousal positive affect. Follow-up Tukey's test results indicated that domestic sport tourists and sport excursionists exhibited a higher level of ideal low-arousal positive affect than international sport tourists. The results are discussed in light of practical implications for enhancing the success of the World Masters Games Kansai.