Such a cool idea but, isn't a bit too obvious that the people reserving a day on the calendar showed but the website are not real? The calendar has only 3 days booked, what about the other people that every second are reserving a day?
Also, you need to think about what you are going to do with the money if no-one picks the right date, otherwise there might be legal issues...
Also, you need to think about what you are going to do with the money if no-one picks the right date, otherwise there might be legal issues...