Moderate opioid use is possible if you take long enough breaks to avoid physical dependence. That of course requires the self-discipline to say no to the psychological pull. As far as I recall, I felt some mild withdrawals after about 3 consecutive days of poppy tea use, so the physical dependence does set in pretty quickly. But if you know your boundaries, it’s easy to avoid. I would wager a guess that you could do strong opioids once a week indefinitely without any negative repercussions.