You may change your Shipping address up to 24 hours before the shipping date. If you decide to change it after that, 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 books to two different locations. Contact us via our email form or call (888) 600.2011. Remember to have you ID Code ready for all correspondences.