OP - I can totally relate to that JAWS fear! My parents took me to see it when we were on vacation in a nice, seaside town (much like the one in the movie, but on the Pacific) when it first came out. I was 7. I screamed and cried in abject terror, but they did not remove me from the theater. I've had an irrational fear ever since then (I'm 43 now). But, I LOVE the movie. Go figure.
I'd be a bit worried about CC, myself. Haven't been yet, but I've already wondered how well I'd deal with swimming there. I did that snorkelling thing at Typhoon Lagoon, and I knew it had little sharks in it. I'll tell you, I was breathing pretty hard through that snorkle and I wasted no time getting across to the other side. I did it, though. I think at cc, I'd go for a swim, but I'd be darting my eyes around looking for those giant fins!!
Back in 2005, I spent a week crewing aboard a tall ship. We were in port and I was assigned to help with putting a new coat of paint on the bow of the boat. To do that, I had to hang off the side of the bow, over the water, in my climbing harness. I was extremely hesitant to do it. The crew kept telling me, "Trust your harness, it won't break." I couldn't tell them that my REAL fear was that I'd be hanging over the side of the boat, like a stinkin' hors d'oeuvre for JAWS, who would undoubtedly come up out of the murky harbor water and eat me in one gulp! I got the paint job done, but I was secretly freaked out the whole time!