Fact!, but that's not the important part for you.
FAA requires that you keep all Lithium polymer
batteries in carry on not checked under the plane.
I'm not going to look up the statute tonight but you can google it and it really based on science, nobody likes an unattended fire below the aircraft you're flying in...
DON"T try to bring any drone you want to keep to Nicaragua, at least right now. Most airport staff won't hassle you and recognize it';s just a camera, Search on this forum about the country/countries you will be visiting for some good beta. Spark travels well.
Please remember YOU are an ambassador for all of us and how you behave on your holiday affects the rest of us.
Post your trip pics here!