Subject to the Tariff/Terms and Conditions of Service, UPS guarantees on-schedule delivery of packages, shipped via UPS's services, that are listed as guaranteed or will refund your transportation charges. Guaranteed Service is not available in all areas and does not apply to shipments containing a package with an Additional Handling or Large Package surcharge. Scheduled business days and delivery schedules are revised occasionally due to changes in distribution and volume, especially during holiday periods. Service to some remote areas also may require additional delivery days. For current delivery schedules, service availability and information, and a description of the UPS service Guarantee see the UPS Rate and Service Guide. The most up-to-date transit time details will be available at ups.com/ctc at the time of shipping. Certain commodities and high value shipments may require additional transit time for customs clearance.