Seafood Please! Harbour? Mermaid Inn? John Dory?
I'm looking for a great atmosphere...a fabulous raw bar...and an overall wonderful dining experience. Advice on where to go? Harbour? Mermaid Inn? John Dory?
I don't know about your other 2 choices, but you will certainly not get anything wonderful at Mermaid. It is quite mediocre. From reviews I've read, John Dory looks promising, if expensive. Aquagrill is known for a very good raw bar, and the food is generally quite good. I've had some nice meals there, but I don't know that it would qualify as "wonderful" either.
This might not be in the vein you are thinking about as it doesn't have an extensive raw bar (but very good) and is definitely a bit more casual, but I went to Pearl Oyster Bar recently and absolutely loved it... Mermaid Inn I think is "fine" but not spectacular, even though it's a nicer ambiance than Pearl.