To see how much deposit they will hold on your credit card:-
At STEP2 of our 3 step online booking process, beneath the car photo of your choice, is a link entitled "IMPORTANT INFORMATION". Click on this link and it will open an additional smaller window, where the terms and conditions appertaining to that particular car at your chosen location are displayed.
You may find it Better to search using a tablet or laptop or computer rather than the cell phone. Nearest location to EWA beach is 5 miles. Obviously there is a greater choice from the airport and normally lower rates.
So there will be a $300 hold on top of the cost to rent a car