You may change your Shipping address up to 24 hours before the shipping date. If you decide to change it after then, we will do our best to accommodate you, but we cannot promise that we can catch your shipment in time. We can also do a "split shipment" if you are delivering your GriotBook to a different location. Contact us via our email form or call (888) 600-2011. Remember to have you GCode ready for all correspondences.