Visit one of the beaches in town - Sandhills, Peggotty, Egypt, Minot, or Humarock. Walk around the Lighthouse or through the Harbor.
Grab a drink at TK O'Malley's and sit on the deck or enjoy a delicious cocktail at The Galley. Head to Roht Marine, just on the edge of town, for a drink on the docks. If you're craving a beer, head to Untold Brewery for Scituate-made brews.
Grab a Maria's sub or Circe's Grotto sandwich and eat it on the beach. Stop into Hibernian Tavern for lunch/dinner (you can't go wrong, but we would recommend the fish and chips) or Salt Society for sushi. Visit the Harbor's newest restaurant, Casa Verde, for great Latin-inspired food. For breakfast, stop into Coffee Corner or sit on the back deck at Lucky Finn Cafe.