All shipping guarantees are made by the carriers themselves. Wholesale Puzzles does not guarantee any shipping dates. If you select a guaranteed shipping method and your package does not arrive when guaranteed, please contact us and we will work with the carrier to determine if you are eligible for a shipping refund. Carrier guarantees do not apply in inclement weather, etc. Please visit the carrier's website (i.e., UPS.com) for complete details.  See our shipping policy for more information.