I know plenty of professionals (lawyers, surgeons, anaesthetists etc) that use recreational drugs. The chances of them getting charged with anything if caught in procession are pretty much nil. Drug laws aren't for the protection of society in general, the purpose is to establish control over people that are viewed as "trouble makers". Upper society members that use 'responsibly' need not worry. If they make a public scene, yeah, they'll be some kind of slap on the wrist, but in general if you are rich enough or respected enough certain laws don't apply. They are for the people beneath you.