I suggest moving the All Day checkmark when booking to the right of the the booking end time, same as Outlook. For some reason this trips up a lot of people they select All Day first, and their booking starts at 12 am, they get their check-in notification at 10 pm, they don't see it and lose their booking. Due to differing scheduling we have allowed people to book desks at all hours of the day, I know people should select a start and end time, but seeing that checkmark first for some reason just make them click on it rather than selecting 8-5 pm for example.