Assuming you don't sign in with one phone in one country, then sign in on another phone in an entirely different country 5 minutes later, you should be fine.
I have been doing that for 5+ years and not even a warning so no worries mate. I daily bounce between my Android and iPhone with the occasional ipad but I hate mcoc on ipad it's too big and unruly for me.
Assuming you don't sign in with one phone in one country, then sign in on another phone in an entirely different country 5 minutes later, you should be fine.
I've played while flying in transcontinental and transoceanic flights, and when that happens I get geolocated to ground stations that jump around a lot. Never had an issue doing that.
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For autoplaying I'll open accounts on the older devices while i live play on the newer devices. No issue.
Don’t worry, I won’t tell anyone 👀