By Sensual Art, 1728065753
In hindsight, it's obvious I suppose, but do check the local laws of any country where you plan to take your drone.
I have the UK requisites for flying in the UK, and also a French operator ID which covers me for the whole of the EU, but I got caught unawares when I travelled to Tanzania, where the immigration check included an X-ray of my luggage, which revealed that I had a drone with me. It mattered not whether I was going to use it, that country required me to have filed paperwork a number of weeks in advance, which I'd not done because the trip was very much on the spur of the moment.
Hey ho, they took the drone, gave me a receipt, and I picked it up again when I got back to the airport for my flight home.