Nice! I took Starlink with me on few road trips so far with my Model 3 and rigged it up to work off my car's battery. I did have to change my service address prior to arriving at new locations but it worked fine nonetheless. With the new roaming option, that's even easier now. I wrote about it on my blog for those interested: https://blog.oxplot.com/powering-starlink-on-the-go-with-tes...
Haven't yet had to change my service location. It's still using my residential address circa 2,344km away from me. From time-to-time the app displays "not in service address" for a couple moments then it disappears. Roaming is disabled / wasn't even an option when first started doing this.
Interesting. What I noticed was that without changing service address, it would be in search mode for hours without going online. After the change, it would come to life in minutes. I did my trips late last year. I'm sure things are changing fast week to week as more satellites (and thus more bandwidth) is put into orbit.