I'd heard negative things about Sindbad (don't ask me about the spelling; that's how they spell it!), but DS especially quite liked it.
We did Poseidon's Fury on our last trip and....we're just not sure. It's not a ride, it's not a show, it's a....who knows? It was worth it once, at least. It's well done and impressive, but it's long, you have to move rooms many times (then again, you do that for Disaster, too, don't you?), and if you have kids in your group, it's LOUD LOUD LOUD. And a bit spooky.
It does have one excellent special effect, when you move through the water tunnel. How do they do that?
So I'd give them both a shot, at least once. It's pretty in that area and it smells of nice incense. They have heraldry stuff for sale, including swords and knives and such. I haven't looked in the other shops. Oh and they have games of chance like a carnival.