Wedding rehearsal dinner - Long Beach
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I would suggest King's Pine Ave Fish House because they would be able to accomodate a large group, are close to the Queen Mary and have an excellent menu. Chilean Seabass is my favorite menu item, but they have great specials.
If you were thinking steaks then go to 555 East, excellent food and their service is flawless. Also close to Queen Mary.
Reef is very close to the Queen Mary and has breathtaking views but the food is to gag for. Don't get suckered.