Wakatobi will let you solo dive on their house reef with a self-reliant diver cert or equivalent. They do make you take a pony tank and the current can be fierce, so be careful.
Does "hundreds of dives of solo experience" translate to "equivalent?" I'm not going to take a class now. In the 90s, I did buy a pony rig and carry it, back when I strung all sorts of crap from my d-rings, before seeing the benefits of the DIR/HOG divers. Yes it was a redundant supply, but at the risk of snag points and extra poundage. A 13ft pony is essentially the same 500 psi reserve, so I stopped bothering. In hindsight, an H valve would have addressed it far better.
Appreciate the comment about current. I had an illusion from their lovely brochures that this wasn't present there, even though that would make little sense. Current quite often translates to life. But I made that mistake with Anilao and my wife was a bit upset. She can do camera, or current, but not both.