I've owned a 7100 for about 2 years - its a great camera (previously had a 7000 and 80). It has a mostly ruggedized body which is great for travel. You certainly would not go wrong with this camera. I'm not sure the few additional features of the 7200 are enough to justify more cost.

The one feature I would have liked is an articulated screen but Nikon seems to think that this somehow demeans a DSLR. Very often traveling I need to shoot over someone or something. The way I have to do this now is through a cable, android tablet, and some software that allows me to see what the camera sees and remotely control it - not ideal.

However I would second the comment about lenses. I used to travel with the Nikon 18-200VR but now I use either my Sigma 17-50 2.8 or Tokina 11-16 2.8. The Sigma and Tokina give me a couple of extra stops of speed, excellent field coverage, and they are much sharper than the 18-200 can possible get and I don't miss the 50-200. I suspect they would be very good on most cameras (although you need to confirm the AF focus mechanism works for your model). That and a tripod make for some great shots.

One last point, assuming your camera supports high write speed rates, don't forget to get a SD card that supports write speeds of at least 40mb/s (UHS-1 or 3). They are more expensive but you will absolutely see the difference in FPS. At many events I take short bursts of 5-10 shots and I never have to wait with the 90+mb/s cards I have.

Hope this helps.