Yes and No.

No because you can move your seat to an open seat at anytime by just clicking on an open seat

Yes because once you pick your seat, you are paid and confirmed - no one may steal that seat from you! That is the advantage to paying early!

In very rare circumstances your seat may be moved. We will attempt to contact you at your published email ONE time letting you know. This rarely happens, but in order to fully comply with ADA (American Disabilities Act) we may have to move someone so that a wheelchair has easier access.