Things have changed—a little—since the day when you had zero options for sleeping or dining overnight on Monhegan, and had to retreat to the mainland. There are a handful of cottages, simple inns, and plain restaurants on the island (and, at last check, at least one Airbnb rental). In a pinch, hit L. Brackett & Son (222 Monhegan Ave., tel. 207/594-2222) for picnic supplies.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.