I must reply BS to a few post here!
At disney.. they control the ride, the safety, etc. On an open water dive, a TRAINED diver should (by research, training, and briefing) understand the risk, the dive itself, etc. We surrender our very lives to Disney.. there is no required understanding of the risk, those are undertaken by the provider. But as trained (and when we do BOW, we are taught to dive within our training) divers.. we SHOULD dive withing our training and physical limits.. THAT is not a dive ops responsibility!!! That is OURS PERSONALLY. It IS the dive ops' responsibility to advise the level of experience and physical fitness required for the dive... but a dive op cannot control a "advanced diver" trying to do a deep wreck penetration with out proper equipment and training. I am ASSUMING that the operation properly did briefings topside.
I must admit to having an issue with a dive op taking divers to a serious dive without having a divemaster down. The keys operations are in my mind lax on that. Sure, do Pennycamp or Alligator or whatever.. but to do the Duane, Bibb, Spigle, or Eagle??? You better know what MIGHT be! and be experienced and trained to deal with it!
If they didn't advise properly or have a pro down? Justifliably screwed.
This is a most unfortunate thing.. and I'll bet that it was not the op's fault..