Most definitely take the earlier ferry. We prefer a direct taxi to the Best Western Emerald Beach (right next to the airport for their on-the-beach restaurant with a table under the thatched roof, or even in a lounge chair in the sand (small fee) to enjoy lunch and relax amid palm trees and facing the sea.

If you have no heavy luggage, you can even walk to the airport...short walk but it is in the sun and we don't mind paying the taxi one last time to arrive cool and comfortable. If you have lots of luggage, the folks at the front desk will store it while you have lunch.