Congratulations on your new nephew! About electricity, keep in mind that you use 110V/60Hz in USA and in Germany they use 220V/50Hz. Most power supplies for electronics nowadays handle both, but if you bring along other stuff like a hair dryer, shaving machine or similar items there is a bigger risk of them being made for 110V only. Also it might be a good idea to familiarize yourself with an app that use the camera to translate written text. Text will often be written in English as well, but not always. Also, check what phone and data roaming costs applies for your phone plan when travelling to Germany. Hotels normally have free wifi, but when away from the hotel you might need to use data roaming. Anyway, wish you luck in the Invictus games, and welcome to Europe!
Good luck and great to see that you're competing in the Invictus games this year. Have an amazing time. And as for talking about stuff that's a little off topic for this channel, don't worry about it, I for one enjoy learning a little more about the person behind the camera and if someone isn't interested in that stuff they can always watch something else.