How can I separate temporary excitement from evidence that a university genuinely suits me?

Separate the impression you gain from a visit or information session from the everyday academic and practical conditions. After allowing time to reflect, check concretely whether the subjects you want to study, teaching and assignment patterns, costs, commuting, and support arrangements fit your preferences and circumstances. Use official information, class observation or conversations with current students where possible, and comparisons with other universities to see whether you can explain your reasons again. These are tools for assessing possible fit, not guarantees of your experience after enrollment.