If you just want the experience of riding the ferry and getting out on the water, 2 hours is plenty. We got up early, bought coffee and pastry at the bakery across from the ferry terminal, rode out and back, and were back in our hotel room before our (grown) kids woke up.

Many great places to eat in and around Portland, and you can drive around the inner bay part of Casco Bay, or take a ferry (which is cheap!) to Peak's Island in the outer part for a quick jaunt to a cool little island. When we visited Peak's Island in September we rented a cart and drove around the island in an a couple of hours, stopping at all the sites. Fort Allen Park on the Eastern Promenade gives you a lovely view of the bay, as well. You can spend as little or as much as you want and have a great day anywhere in the area! OOB/Portland has been a vacation destination of mine for years.

Simply take tthe ordinary Casco Bay Ferry. You can stop ad get off and on at any of a half dozen islands and explore and get back in,. Te tours that exist are not realy worth the extra money.

Casco Bay Lines is a local ferry service, not a cruise line. That said, the best way to see the most islands in Casco Bay inexpensively is probably on the mail-boat runs. Now that CBL is on its fall schedule, ferries make fewer trips than summer, so check its website for options. Most islands are uninhabited; of the inhabited ones, most have very few places to shop or eat after Labor Day, so plan to bring food/drink with you. Naturally, all options hinge on when the cruise ship arrives/departs and how long it is in port. The CBL terminal is a short walk from where most cruise chips dock in Portland.

We took a hour lighthouse tour on a boat very pretty. If it's raining I recommend the art museum.

Hello, you can go online to cascobaytourlinescom or go down to commercial st -to there office and book on the sunset cruise which takes a couple of hours, it`s awesome-I`ll be there in two weeks taking the sunset cruise again it`s the best !!!!Good Luck !

The boat goes from island to island delivering mail and packages. Locals use it to get from their home island to the mainland for shopping. You could get off and walk around but not sure there is anything to see other than private homes. Most people just ride the boat from start to finish. Bring a jacket. Gets windy. Don’t remember the fee but was very reasonable.

if you're interested in Maritime history, Portland Harbor Museum is a small charming spot to visit. Check out Schooner Fare's Portland Town on youtube for local music.