Ok, trip report:
I started off the awesome dive by falling off the ladder and into the aquarium, with the big boss watching.  The hand rails were these really nice, shiny, smooth stainless steel jobbies... and I was two rungs into the water, my left hand slipped right off and *SPLASH.*
I bobbed back up and gave him the "I'm ok" signal but I am sure they were looking down to make sure I didn't take out a shark.  Fortunately, as you can see in the pic, the ladder extends down a ways into the water and any sharks would be swimming around it.  They tend to just do laps.  All was well.
My major concern was the new equipment.  It's a full face mask which is pretty new to me, they had me check out on one at a local dive shop, so it wasn't my first time with one, but that was over a month ago and it was still something I am not yet comfortable using.  Turned out I had zero issues with it.
The second equipment concern was the lack of a BC, or "Buoyancy Compensator."  It typically holds your weights and is inflatable so you can trim out your buoyancy exactly so you have the capability of just hovering stationary in the water.  Well, you don't use one here, just a harness with weight.... so you have to pretty much get it exactly right.... compensate for your personal body mass, the thickness of your wetsuit, and salt/fresh water.  The last time I dove with that suit I used 16 pounds in fresh water, but I had a BC, so this time I just wild-ass-guessed 14 pounds in salt, no BC.  Turns out I did pretty well, I didn't have to add or subtract any weight.
That isn't to say I was smooth out of the gate.... for the first 5 minutes of the dive when I would inhale I would rise 5 feet, and when I exhaled I would sink 5 feet.  I had to slow my breathing, relax, and I got myself to where I was hovering pretty well.  I fed the reef fish, smiled when the shark fins would graze past my face, and wave at the kids looking at me through the glass.  My own kid was out there watching... he made sure to point and laugh when I fell in and announced it to the room, "That's my dad, he just fell in!  ha ha ha...." and I am told he did a good job critiquing my buoyancy to everyone when I was bobbing and sinking.  I could hear in my ear piece the announcer guy out there, when he introduced me, he said it was my first dive... so I wasn't sensing any mocking, "Good job, asshole" vibes coming through the glass.
I even played rock-paper-scissors with a few kids.
By the end of the dive, when the feed bottle was empty, I was just swimming window to window, waving at kids... scaring one or two of them, heh.  Most of them were cool, smiling and waving.  LOVED swimming with the sharks.
After we went out to lunch, I ate a lot of meat and called it my shark lunch.  Then we went for a shark drive and I announced later that I would be taking a shark nap.... which I never actually got.
Anyway, when I surfaced I told the big boss, "How'd you like my graceful entry?" and he just smiled, said I did fine, and it was just first-dive jitters.  
I just hope I don't repeat that in 7 days when I go back in the tank again. 
 
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Right off the kid's left elbow is the back of a 6-foot zebra shark swimming by.