I'm sorry for your loss travelin, I'm glad you were able to make the journey to be with him for his last days.
Maine is a beautiful state, I hope you enjoy it there. Any idea what parts you'll be going to? I used to spend my summers in Old Orchard Beach (still my favorite to this day - not usually too jammed with tourists in the summer) and Portland. Fort William Park is nice, big open space with some little cliffs and a Lighthouse -if you're going as far as Portland, it's on the way up the coast.