2 adults & 2 children (13 & 17) from coast of California visiting Maine for 2-3 days June 29-July 1 then onto Boston. We want to maximize our time. Love the outdoors, beautiful beaches, little bit of history and quaint towns (for mom), good food. What would you suggest we see and visit in such a short period of time and try and make everyone in car happy. Made reservations for 2 nights in Portland as a base. Can change if availability elsewhere.