All U.S. Navy port calls are scheduled months in advance, (nrmally before leaving the U.S.)so this was a snub of the U.S. Usually, there is a confirmation of the arrival of the Navy ship one to two weeks ahead of the port visit by the State Department so that the tugs, food delivery, fuel and water/electricity can be formalized and payments arranged. In Hong Kong the ships anchor in the harbor and require shuttle boats to be hired to transport the liberty party to the pier.
Thanks.