If you specify the destination port is Bangkok, which means that the container is lifted onto the port of Bangkok and the customer will be required to clear customs at the port of Bangkok with only.
If you specify a destination port of Bangkok meant that containers are lifted into place. Bangkok Port And the client must clear customs at the port of Bangkok.
If you enter the destination port is Bangkok. That means that the container will be up to the port of Bangkok. And the customer is to clear customs port only.