"The last local luncheonette" is how Marriner's sums itself up, and has used a sign with the legend DOWN HOME, DOWN EAST, NO FERNS, NO QUICHE to also get its message across: Namely, that this is a small and no-frills affair, totally Maine, so don't expect snootiness or pretense. It's done up in a not-too-subtle nautical theme of pine booths and vinyl seats. (Some of which are held together with...