The Decline
Arcane
The travel thing is utterly retarded. You won't get high-speed Internet on either a plane or a train most of the time, you'll be lucky if you have any at all. While walking around sightseeing or whatever you'll be lucky enough to not accrue high Roaming fees while just using Google Maps and the Internet for a bit. And hotel Wi-Fi is often very poor, most of the time you'll be lucky if you can watch a few YouTube videos properly or Stream some Netflix via Chromecast or similar. Buying a gaming laptop if you think you'll somehow require to play games while you travel abroad seems to be a much more realistic plan than Streaming 4K/60 without latency at 16GB+ per hour even if the actual concept somehow worked in most situations.If I travel, for work or pleasure, I bring my laptop. I never need Stadia on the road - there is Steam/Origin/GOG/no-cd.exe's and a mouse.
Don't worry 5G.
Honestly you're going to be paying out the ass for bandwidth and data. Might as well pay up front for the hardware and a better gaming experience.