Eberron? Count me in!
Is any travel in any campaign uneventful? The point is that the mode of conveyance does not imply anything special about the type of adventure you're going to have or the sort of encounters it might lead to.
It depends on how detail-oriented you are. Chult/Xen'drik and Calimshan/Al'Qadim are similar as tropes, despite wildly varying specifics.I think Q'Barra is more like Chult than Xen'drik is. However, I'll agree with your last bit, since I don't think Calimshan is much like Al-Qadim either ...
The thing about Eberron travel is that it's generally faster than in most other settings. A Forgotten Realms adventure that takes the party from Waterdeep to the Dalelands and then to Amn would take months (I estimate 2500-3000 miles travel distance total, so 3-4 months). Sure, you can fast-forward past that, but it's still a major undertaking. If I were playing a game where we were traveling for 3-4 months on foot and the whole journey was just handwaved, I'd be a little annoyed.
In Eberron, a journey of similar length (say, from Sharn, to somewhere in Aundair and then to Thrane) would take 3-4 days, at least as long as you travel via the Lightning Rail. That makes a globe-trotting (or at least continent-trotting) campaign a fair bit more "realistic".
. Not for me.
If you equate Al-Qadim with the medieval Middle East, then Calimshan would be like Morocco / Moorish Spain (with its northern neighbor Amn being something of an analogue to colonial Spain).I think Q'Barra is more like Chult than Xen'drik is. However, I'll agree with your last bit, since I don't think Calimshan is much like Al-Qadim either ...