My wife and I are on a two week trip away from home. Roon is working well using our iPhone hotspots.
I used a 4G WiFi router to do a show a while back. It worked reasonably well and even gave me a few pointers on improving my home setup!
I get 24/96 using my laptop, Dragonfly Cobalt, and Sony headphones. Of course, you can burn through a lot of data pretty quickly.