What should I pack for my Andaman trip?

I am about to go on my honeymoon to Andaman and I am not sure what to take there, so I am seeking some tips on what other travelers have to say. I have heard that the weather is rather unpredictable, and I would like to be ready to it. I have been researching on the different Andaman honeymoon tour package and I have come across some tips on what to pack. Lightweight and breathable appears to be the way to go, accompanied by some warmer things to wear on the evenings. I'm also planning to pack some comfortable walking shoes, as well as some water shoes for the beach activities. I have heard that some insect repellent and sunscreen should be included as well as the sun and bugs might be strong. I'm hoping that we'll be able to pack lightly and avoid checking in any luggage.