NCL's website states:
Fire cover Category 8
MAN is Category 10
Website giving the breakdown of categories
NCL can, therefore, handle: length of aircraft between 49m and 61m long
I thought the airport was Category 9 as the 777 length is 73 metres which is above Category 8, the airport does have three Panther appliances which according to the link a minimum of three engines are required and the airport also has a older smaller appliance that it can use, unless it does upgrade for the Emirates flight and the remainder of the time it is Category 8.