Most Islands have car rentals and the rates are relatively cheap. The right side for them, wrong side to you. The roads are in fairly good shape on most of the Islands, and it's almost impossible to get lost. On an island most roads led back to where they started. Start out following the coast roads.
Fishing villages are around every turn.
Photographing them will be challenging. You can't be shy. If people don't want you to take their picture, don't. Most don' t mind, but some will. Concentrate on the seascapes, beaches, and colorful boats.