There are several locations (Harwichport, Sandwich, and Falmouth). This is a seasonal restaurant. Website: http://seafoodsams.com/
This is counter service, and then there are tables to eat at, or you can take it to go. Lunch specials are great, between $5-$10, and are the perfect size. This place is so busy that the food is always fresh. I love the clam strips and popcorn shrimp. It's a great place to get something fast!