Ever wondered how Portugal reduced their drug abuse problem without sending even more of its citizens to jail? Here's a video that explains exactly how this all works.
And to answer the question we occasionally receive "Are you smoking up over there?" that would be "Ah, no." Because we're here on temporary residence permits, subject to the good will of the immigration authorities, we behave ourselves. That doesn't mean that occasionally we don't encounter a cloud of pot smoke when we're out and about and take a deep inhalation.
But then that's not illegal (wink).