We will be staying at the Sheraton Vistana 11/5-10 and will be renting a car. The fee is $14 per day for two booster seats from Budget. We were thinking of shipping our own booster seats (just the bottom part) directly to the Vistana or a local UPS store. Does anyone know if the Vistana accepts boxes from guests? If not, is there a local UPS store that we may be able to ship them to? Thanks.