521 MAIN Hyannis is a restaurant situated in Hyannis, MA, serving American cuisine and seafood dishes in a waterfront setting. They offer a full menu and a bar for guests to enjoy.
Operator computes a Health score every night at 2 am HST. It is the one number that tells you if this shop is winning, losing, or steady. Here is how 521 MAIN Hyannis broke down on Apr 24, 2026.
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