I just wouldn't do package delivery near the end of your trip.....
In May we had our purchases sent from the parks to our resort a few times. Near the end of our trip though, it was a Thursday afternoon in Epcot, we had our family picture taken & made into a poster at the Kodak Picture Labs in Epcot. We were told it would be ready for pick-up at our resort gift shop the next day, (Friday) after 1 p.m. Well, that was fine because we weren't checking out until Saturday.
Well Friday afternoon we went & our poster had not been delivered. They said they didn't know what happened but it should be there with the next delivery, Sat. at 1:00 p.m....I replied that we were scheduled to check-out at 11:00 a.m. but it wasn't really a problem for us..we just got a late 1:00 p.m. check-out like we usually do. For some people who have a flight to catch it could be a problem. We drove & had our van, thank goodness, we could wait.