Someone mentioned: "UPS promises those companies they can deliver."
Then why do the carriers take away money back guarantees on delivery time during the season? They say they can handle it but not necessarily on-time during this period. My educated guess is you will indeed handle it, just not on normal delivery schedules, as you state clearly to all shippers each year. Now do they update their web-site ordering systems to pass that info on to the paying public? You'll be hard pressed to find that they do. But the public should just use some common sense here.
Then why do the carriers take away money back guarantees on delivery time during the season? They say they can handle it but not necessarily on-time during this period. My educated guess is you will indeed handle it, just not on normal delivery schedules, as you state clearly to all shippers each year. Now do they update their web-site ordering systems to pass that info on to the paying public? You'll be hard pressed to find that they do. But the public should just use some common sense here.