Thank you. I am so naive. But I have to say I live opposite a restaurant and bar which is quite secluded and you very frequently see very very flashy cars go in, when the restaurant is closed, maybe 1am on a Tuesday morning, they go into the car park and about 10 minutes later come back out. And there are always lots of expensive cars there but hardly any customers in the place. I wouldn't be surprised if something dodgy is going on there.
Cocaine is used very liberally by the younger affluent class of Capitalenos... - And that would be what I would suspect who the customer are for your restaurant/ It is not really that dangerous a drug - in that only about 20% become addicted to it -
https://www.michiganpsychologicalas...-only-one-in-five-become-addicted-to-cocaine-
However CRACK is a very different form of the drug, being cheaper and users report being much more addictive.
Inside the recovery community in the DR - cocaine, crack and weed are all treated the same - which confuses some visitors from the US who rarely consider pot to be an addictive drug - as there is no evidence that it is.
Anecdotally, those who consume pot do not mix it with either cocaine or alcohol.
Crack (which was first developed by a Dominican
https://en.wikipedia.org/wiki/Santiago_Luis_Polanco_Rodríguez) can destroy a small tourist community. I remember seeing my first crack addict in LT and having to go to the local mayor's office to give a bit of a mini-seminar on the difference between the drugs. A good friend of mine - a real activist in the AA community - also had a long talk with some community leaders - telling them that he had never seen any sort of success with crack addicts (although there MUST be some - perhaps just not with AA)....
The huge difference in the safety in SD and the country as a whole occurred, I believe, with the arrival of many Colombians under Leonel. Prior to that, the Dominicans in charge of the import/export/distribution did not open the "product" on the island but rather paid whatever runners they had in cash. Colombians had no such restraints. (that is simply hearsay -I have done no reeaarch on it )
https://theworld.org/stories/2011-08-22/drug-addiction-surges-dominican-republic