Boraxo

What he said.

There are frequent hotel sales for Hawaii but hard to predict whether they will have space on the dates you need. So book only fully refundable, and then consider your options as the dates get closer. We are following the same strategy to book SPG points+cash rooms and then waiting to see if rates drop.

Also do not under any circumstances do a prepaid car rental unless you are getting the car for <$200/week. We have often seen rates drop in the last month or week before departure as companies decide to unload excess inventory. Most people book well in advance and never bother to re-check again.