I don’t think customs will notice it or search you that thoroughly, might help to disassemble it as much as you can. However, if anyone notices it in the air you can get into heaps of trouble. That is not to say you shouldn’t do it, just be extra careful. Find a secluded location to launch and land, and keep it high not to draw attention. I’ve seen drone footage of the pyramids, usually those pilots launch from the horse stables near by. Pay for a camel ride, and talk to one of the camel herders (they are astoundingly fluent in many languages), they will help out.