All these non-crab eaters (not criticizing that fact, I'm not a crab eater either)... I hope you realize just how much of a crab place Cantler's is. I mean, it's 98% crab shack, 2% other food.
I've only ever been there once, with friends who wanted to go, and I definitely felt like a duck out of water because I was the only one in the place (not just in our party, the whole place) who ordered a steak instead.
Don't get me wrong, I'd happily tag along there with friends again if I could (and I didn't take up someone else's spot), because although I don't like seafood, that doesn't mean I'm going to be a bad sport with friends who do.
...just be prepared for the overwhelming crab atmosphere!