You also have to understand a little about how hotel rates work here. Almost every hotel has rates for locals that are much lower, typically 40% off and they often have contracts with the state and other employers for lower rates for visitors. My company has arrangements with several resorts for visitors. The resorts are normally well over $500 a night but our contract rate is about $150.
I used to have business at University of Hawaii Manoa and they would get me rooms at beach front hotels in Waikiki for less than $100 a night with no resort fees.
The state negotiated with the resorts on Maui so I suspect the rates are around $150 a night or less. Remember, the state could have shut down Kaanapali completely for months. They have a pretty strong bargaining position during emergencies.
So yeah the Four Seasons might be full of FEMA employees but there is no way they are paying what a tourist would pay.