Just saw this thread and perused it. Must say that I'm impressed by your boldness. I'm not judging you as you're obviously a mature person capable of deciding for yourself whether the risk is worth it. Have a great time in the Dam. Obviously, you and your hubs deserve it being the parents of 5.
I understand your reluctance to ingest contraband. Please take into account that this is perhaps the best way to avoid detection though no method is foolproof. If you do this, use several layers. I would stick to hash. Good luck.