Yes. Knowing the established practice is valuable. I imagine as time goes on we’ll see sites broken down by whether one need do that or not. Some people like to leave some valuables in a locked vehicle, so it matters. Richard.
One of the things we loved about Bonaire and Curacao was the ability to drive down the open road and stop by a painted rock to dive, and be the only people on the site, but the significant risk of robbery has somewhat dampened the fun of that experience. And as we have gotten older some of the entries and exits seem more challenging.
"Pirate shore dives" used to be the norm on Grand Cayman, too. The dive shops gave you the tanks and weights and told you where to go to find the best shore dives, and provided tips about the best entrance and exit, and suggestions for the cool things to see and the best time of day or night to dive.
Nowadays, there is usually a vendor onsite at the popular GC shore dives and you rent your tanks and weights from them - the price isn't bad, usually $12 to 15 dollars per tank with weights. It's not quite as much fun as the old days but it does have some advantages. You can park your car and not worry about break-ins, you can rent equipment if you need it, and sometimes there are rinse tanks, hangers, changing facilities, and showers available. Usually there are ladders or steps for easy entry/exit, and there may be a restaurant onsite or nearby so you can grab a nice lunch between dives and a drink after diving.
Part of me misses the old way and part of me appreciates the perks available with the new process; I'd probably feel the same way about Curacao and Bonaire if similar changes are coming to their shore dives, too.