My fiance and I have chosen Khao Lak (Meridien) over Krabi (Sheraton) for our honeymoon (we're spending 5 nights in Khao Lak after visiting other parts of Thailand) in December. From what I've read, it appears that Krabi is only 2.5 hours from Khao Lak.
Is it worthwhile to use one of our five days to do a day trip to the Krabi area if we leave in the morning and return at night? Is there a recommendation for how to do this? For example, could we get dropped off at Railay for a tour? Any suggestions would be appreciated.