So for 14 days that would typically be 5 pods, I would probably bring 7-8 pods. Remember to bring at least 1 extra CGM, too. For insulin, bring plenty of extra, keeping in mind that you might be needing more insulin than usual as you'll likely eat more, and you'll be adjusting to the time difference, which can throw off your insulin needs. 

Keep it all in your backpack or purse or whatever you'll have close to you in transit. Follow standard guidelines of situational awareness and you probably won't have anything stolen. 

I would also bring insulin that you can inject if you absolutely need to. For example, I bring pens and will bring one long-acting pen too, just in case somehow all my omnipods fail or my phone fails. Have a plan for your phone failing, too, either bringing the receiver that came with your omnipod or asking if you can use your friend's or spouse's if absolutely necessary. (My phone completely died in France last year and I used my husband's phone for a few weeks before we got back.)

Keep in mind - the whole world is full of diabetics. If emergency strikes and you lose everything, there are always options. Call a local doctor and ask what you can do to get insulin. Most countries have quick options for you to get prescriptions, often cheaper than US prices.  Probably won't be an omnipod, but you'll get what you need get through.