Tonga is negotiating the lease of a cruise ship to provide additional accommodation for the coronation of King George Tupou V in August.
About 500 invited guests are expected including members of the royal families of Japan, Britain, Norway, the Netherlands, Monaco, Thailand and Bhutan.
The Chief Executive Officer of the Ministry of Tourism, Edgar Cocker, says they have block booked all the 513 available rooms in hotels, motels, guesthouses and resorts.
He says they are confident they can secure a ship for more accommodation .
"I would say 78 percent or 80 percent positive that we are still under negotiation with some potential providers of cruise liners, so yes that is still on the process of negotiating."