What's true of divers and dive shops is also true, to some extent, of destinations - some are more 'solo-friendly' or 'hostile' than others.
Researching Curacao, I noticed Ocean Encounters and Dive Bus forbid it. Go West Diving's website includes this blurb "Solo Diving is not allowed under any circumstance(s)," but a former employee indicated if you're solo certified & have proper equipment they'd allow it, and awhile back I e-mailed Go West and confirmed that was still the case. Here's a piece from the e-mail I got back in early August from Go West
"On Solo diving, we still have the same opinion Andreas had given you.
We do not, nor will we advertise with Solo diving at the moment.
We do accept solodivers that have all the equipment needed in redundancy, so if you have a 2 computers, 2 regulatorsets, a slate, extra mask, extra signaling devices, and so on....
You can rent tanks with us, that won’t be a problem.
But, like I said, we do not advertise with solo diving at the moment."
Compare that to the 'dive freedom' of Bonaire. And if you just enjoy contentious discussions vainly trying to get to the bottom of why a restrictive policy is in place, start a thread determined to solo shore dive on Grand Cayman.
Why is solo diving the 'red-headed step-child' of scuba diving? (Hoping the figure of speech is widely understood).
Richard.