In case you are thinking of an Andaman and Nicobar package for family, I would recommend to spend at least 5 to 7 days there. This time can be used to tour the port Blair, the Havelock Island and Neil Island without rushing. Families will have access to beaches, light water sports, touring historical places and relaxations. A week long vacation can be the best since you split between fun and rest particularly when visiting with children or the aged. It also makes the journey a comfortable and stress less experience when a buffer time is added between the ferry transfers.