Hawaiian has known about this since 2010, they've been preparing for this by charging for whatever they could get away with, aka stockpiling money. 
They are ordering new A-320neos for the mainland to the islands and will use the A-330's and the new A-330neos for longer flights. 
The killer for all the interisland operators will be when Southwest starts the interisland operations. Good for the consumer.............

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