According to forum posts, travelers driving to Bar Harbor from Pennsylvania suggest using I-81 to I-84, then taking the Taconic Parkway to I-90, and eventually I-95 north to reach Bar Harbor. This route includes a recommended overnight stop at the historic Red Lion Inn in Stockbridge after about four hours of driving.

For those driving from Portland to Bar Harbor, forum users recommend making scenic stops at places like the Pemaquid Point Lighthouse, the village of Camden, and the Penobscot Narrows Bridge. These locations offer picturesque views and a rich experience of Maine's coastal beauty.

Some travelers have advised that driving at night might limit sightseeing opportunities; thus, taking I-95 is suggested for its directness. Stops for meals like Governor's Restaurant in Waterville or Dysarts in Hermon provide convenient dining options just off the interstate.

Travelers driving from New Jersey to Bar Harbor have recommended stopping for a lobster lunch at notable spots such as Fox’s in York Beach, Two Light Lobster Shack in Cape Elizabeth, or Chauncey Creek, which are celebrated for their seafood and scenic locations.

According to forum posts, Maine offers a variety of family-friendly activities along its coast. Travelers have highlighted outdoor adventures such as hiking, boat tours, and exploring tide pools, particularly in areas like Bar Harbor and Acadia National Park. Some travelers mentioned specific attractions like the Owls Head Transportation Museum and Maine Wildlife Park, which are popular among families with children.

For those interested in coastal explorations, some posts recommended visiting sandy beaches in Southern Maine, such as Old Orchard Beach and Kennebunkport. These areas are said to have wide, sandy beaches with relatively warmer water temperatures, ideal for families with young children.

Travelers have called out specific wildlife experiences that children might enjoy, such as puffin cruises and the chance to see seals, puffins, and whales. The Maine Wildlife Park in Gray was frequently mentioned as a highlight for its interactive experiences with local wildlife.

For educational outings, posts suggested visiting historical sites like the Pemaquid Point Lighthouse. The Coastal Maine Botanical Gardens were also recommended for family-friendly events and nature exploration.

Some travelers have expressed satisfaction with renting cars through Costco for its competitive prices. Companies available through Costco include Budget, Avis, Enterprise, and Alamo. Users have noted that services at Bangor airport are quick, often allowing for an easy pick-up process.

Travelers have mentioned that both small and full-sized vehicles are available for rental, suiting different group sizes and preferences. It's important to confirm policies regarding inter-state or international travel as some companies may restrict where the rental car can be taken. For instance, one traveler had to verify that their rental could be taken into Canada.

According to forum posts, it is advisable to take photos of any existing damage on the rental car before leaving the lot to avoid potential disputes. Also, securing a rental well in advance is recommended due to high demand, especially during peak travel seasons like summer.

According to forum posts, Acadia National Park and Camden Hills State Park are highly recommended for viewing fall foliage. Travelers have highlighted the vistas in these parks as particularly striking during the foliage season.

Some users also suggest visiting the Blue Hill peninsula where wild blueberry fields turn bright red in the fall, adding a unique splash of color to the autumn palette.

For the best experience, travelers are advised to plan their visits around mid-October when the foliage is typically at its peak along the northern and coastal parts of Maine.

According to forum posts, popular destinations in Maine include Acadia National Park for its scenic vistas, Camden, described as a beautiful sailing village, and Portland, known for the Portland Head Lighthouse. The Boothbay Harbor area is also recommended for its coastal views and botanical gardens.

Some travelers have highlighted specific attractions such as the Schoodic Peninsula for a quieter experience near Acadia and Bar Harbor for various tours including whale watching and puffin sightings. Additionally, Moosehead Lake and the towns of Ogunquit and Kennebunkport are frequently mentioned for their picturesque settings and local activities.

For those interested in cultural and historical sites, Rockland is noted for its art museums, and the maritime history can be explored at the Maine Maritime Museum in Bath. The Midcoast region, including towns like Camden and Rockport, offers a mix of historical sites, unique shops, and excellent seafood dining options.

Forum users recommend staying in places that provide easy access to desired activities. For instance, Southwest Harbor is suggested for those visiting Acadia National Park but looking to avoid the crowds of Bar Harbor.

According to forum posts, Portland Head Light in Cape Elizabeth is highly recommended due to its picturesque setting and historical significance. It offers trails, ruins of an old fort, and food options like lobster rolls from a local food truck, making it a comprehensive visitor experience.

Some travelers also mentioned other lighthouses near Portland that are worth a visit. Nubble Light House in York and Marshall Point Lighthouse in Port Clyde are popular among tourists. The latter, however, will not have its tower accessible during the 2024 summer season due to damage.

According to forum posts, travelers suggest driving from Portland to Acadia along US Route 1 for scenic views and interesting stops. Key recommendations include the bustling town of Camden known for its picturesque harbor and the Penobscot Narrows Bridge, famous for its observatory offering expansive views.

Some travelers said that the coastal town of Rockland is worth visiting, especially for its Breakwater Lighthouse. Additionally, the nearby town of Boothbay Harbor was mentioned for its charming maritime atmosphere and the Coastal Maine Botanical Gardens, which offer a beautiful natural retreat.

For those interested in history and outdoor activities, Owls Head and Marshall Point lighthouses are frequently recommended. These spots provide not only historical insights but also breathtaking views of Maine's rugged coastline.

Upon reaching Acadia National Park, forum users highly recommend stopping at the park's Visitor Center to gather information and plan your exploration of the park's diverse landscapes and trails.