Check the UAV rules for the part of Europe you intend to fly, they are possibly not the same rules across the whole of Europe, I recently went to France and before going I checked the rules of that country which was very similar to the UK CAA uav's rules.
Whilst I did not have the TH when I went and the Q500 4K was to large to take, I took my aging Phantom 1.5 which has been heavily converted to take phantom 2 battery's or any other lipo battery, also it flys on a Futaba transmitter along with Fatshark Dominator goggles, the only downside is it has only a Zemuse 2 axis gimbal.
Only thing I did once in France was a compass calibration then hover just six feet or so a fed each stick command was ok, flew out away from about 50m at a altitude of 20m and checked return to home switch was function correctly, then I was good to go, fly safe and have fun.