My girlfriend and I will be staying at the Hyatt on Kauai from 10-16 March. We are concerned about the weather and looking for advice for activities to include horseback riding (is Esprit ok???), diving, and zip line tours. In addition, any advice on restaurants and shopping is greatly appreciated. Bottom-line is we are a couple with no kids and want to keep it a romantic relaxing trip (hence why we avoided Maui and Oahu).