No, each student is guaranteed a set number of tickets and can order them up until and including the day of their ceremony. Your tickets are yours and will not be given to any other students. That said, in order to properly evaluate order numbers against attendance numbers, we ask that you only order the amount of tickets you will actually need. For example, if you have 4 tickets available to order, and have 2 guests attending, please only order 2 tickets. If you decide to invite more guests after your initial order, you will still have 2 additional tickets available to order and can order them at any time.