I agree with John; Hawaii would not have been given up. That would have been political suicide for the administration and would never have been an option on the table. What likely would have happened is that the Atlantic fleet would be cannibalized in the short term to keep a supply line to Hawaii secure. Then, once American production had replaced the lost ships and carriers, the war would continue quite as it did in the real timeline, with Americans going on the offence. Yes, in the meantime Japan would have had time to further entrench themselves in the Pacific. However, this would have only prolonged the inevitable final defeat of the Japanese at the hands of the Americans and Allies. If Japan had tried to capture Hawaii during this inbetween time, well, that could have been interesting, but I doubt it would have succeeded. Unless they already had an invasion planned immediately following Pearl Harbor the US would have had time to secure the islands and they wouldn't have been surprised the second time around.