Hi Grant, I just try to provide factual guidance. The NZ rules are based on factual circumstances wherein people were truly stuck in NZ because there were no flights out. The situation has changed for most persons as there are means for repatriation or to depart to another country [few] from which they can apply anew for another visa. They have empathy but the reason to allow for extended stays has to be compelling. As to the number of cruisers involved it certainly isn't many and the boat can be put on the hard and they just go home and return if and when the Covid issues become resolved. A date uncertain. Take care, stay safe and healthy.