I was informed, that in this bill of lading there must be Bangkok as the "Place of Delivery" and Laem Chabang as the "Port of Discharge". The reason for this is, that there will be waterway transportation between Laem Chabang and Bangkok, and that is comparable to road transportation - therefore Bangkok is Place of Delivery, but it's not the Port of Discharge. So these two can't be changed as you asked.
Why the size of high cube container is asked to be modified? Would it be possible to accept as it originally was?