A reservation (called an ADR) is a very good idea; word has gotten out about the Cape May seafood buffet.
One side of the buffet is actually non-seafood items; pretty much basic American chicken, ribs, and beef. But the seafood is the star. Crab legs are always on the buffet now, with an urn full of hot butter to dip them in and a big metal pail to put on the table to hold the shells. One item rotates: some days fried shrimp, some days fried calamari, and some days a white fish fillet. We hit it on a calamari day and after the crab legs it was my fave.
And don't miss the desserts, which are on a couple of completely separate tables up front. I thought the flan did not have much flavor, but they have these things called Oreo bon-bons..........mmmmm..........