15 to 40 days. The preparation and opening of shaved ice shops are mainly related to the preparation progress of franchise stores, among which the most time-consuming is that the decoration time takes 18 days to 30 days, and then others need 5 days to 10 days if they apply for permission, so it takes 15 days to 40 days from preparation to opening. Start a business, start business activities, especially enterprises, shops, clinics, etc.