I can't say much about the rest of the food here (yet) but if you just go for the lobster roll, fries and coleslaw you won't be disappointed!
Their seafood is obviously fresh with large tanks of live lobsters to choose from (not for the roll! :-) ). They sell them by the pound along with fresh clams.
Take home or eat in the pavilion with a (narrow) view of the lake.
I'm going to be back to try their other dinner options!