I have about 85k amex MR points. I am trying to fly from FLL or MIA to Palau (ROR). The ideal airline for this appears to be United. I didn't see united/star alliance as a partner for amex's Frequent flyer partners.. My goal is to get to Palau on points alone. I know there are some dates where a round trip can be had for a total of 70k united mileageplus miles. Any insight would be appreciated!