F.M.
Hi, D.--
Not sure where you will be staying, but we went to Maui to visit friends when my daughter was about 1 1/2 and very mobile. I took some duct tape to cover up electric sockets and knobs so she wouldn't accidentally lock us out of the rooms, etc.
We also packed lots of fun things for her to do like bubbles and flash cards, pictures, etc. If you can, try to take familiar snacks and foods because babies don't always like new foods along with new places. I took our sound machine to help her sleep and not be awakened by strange noises. Oh, and hats and sunscreen!
Have a great trip!