Alaska airlines mileageplan charges 22.5k for infra Asia business class award travel on Cathay Pacific (Maldives is considered part of Asia for their booking purposes). 180k miles would get you 4 RT biz tickets Macau-MLE or HKG-MLE. Only issue I would see is CX only flies Saturday/Sunday to/from MLE.
SQ has hkg-sin-mle biz class award tickets for 90k RT (for 380k for 4). There are daily flights to MLE.