I’ll let others answer points 1 and 2 but I feel able to answer number 3.
Yes it is disappointing that there is no built-in GPS but in fairness Fuji never claimed there was. Using the Fuji app to add GPS coordinates is rather clunky so what I do is this. On my iPhone I use an app called GeotagPhotos
http://www.geotagphotos.net
All is explained on their site but basically you ensure your camera has EXACTLY the same time as your phone, start the app and then it records the position where you took each photo - it actually records a track (using the phone’s built-in GPS). All your recorded routes can then be exported as a GPX file via Dropbox, email, or the web and using Lightroom or a similar program it matches the time along the route with the time you took each photo and then tags each photo with the location. Simples! I use it all the time and it works perfectly. I also get a nice route of where I took my photos as well as them being individually tagged.