Using my Fujifilm X-T2 for family event photos this year has been challenging compared to the conditions I have been shouting in so far this year... it's so, so different to my Nikon D750 and taking photos of the kids has required a lot of trial and error, not to mention some awful lighting in the holiday home we are staying in which has required some real juggling with the exposure to get right. The Nikon full frames are just so reliable in terms of AF and light gathering that you almost take it for granted, and going back to APS-C and a completely different focus system has been a real learning curve in the chaos of frenetic family activity.
However, I'm getting the hang of it, and if I am being fair to myself I have been absolutely crippled by lack of a good flash, as I purposefully haven't invested in one yet until HSS has been fixed with the X-T2... and I really want the Nissin i60A and Commander 1 system.
Saying all that, I am happy with the images, especially at higher ISO's, and the video is pretty damn awesome with the 18-55mm. It's just a shame that my 50-140mm didn't arrive in time to compliment my 23mm f1.4.