Mostly I just teleport my Sims around as I see fit. With the exception of destination worlds of course. But, I played the globetrotter challenge and then you are restricted to a single world for the season. I built a lot of new community lots for that 😂 Moonwood Mill got very tedious, very fast.
But I like the idea of having different regions and grouping worlds together based on scenery/climate. It does make sense. But all travel still takes one loading screen and zero minutes in game. So you'd need to either simulate (like the waiting for the bus mentioned before) or cheat that time.