

We’re in the market for a kid carrying ebike, and while REI makes the most financial sense, I think we’ll be paying a visit to our LBS.
As an aside, I tend to prefer Sports Basement. Have had better luck with their bike department, too. No idea if they’re better from a corporate standpoint though.
If your baby isn’t super fussy, the transportation difficulty (in our experience) is more in the logistics getting to/from airport, and dealing with other ground transportation. We just flew 5+hrs (coast to coast, US) with a 2mo and a ~3yo, and it was a piece of cake (typing that, I’ve jinxed the return flight…).
We haven’t done international travel with our kids yet, but we will eventually. When I was 2 my family went to Europe — some countries were meh with respect to kids, but Italy (from my folks’ retelling) was fantastic, as there is (or was) a big cultural love for young kids.
YMMV of course, but it’s absolutely doable! Kids — even starting as babies — have personalities, and you’ll get a sense of what’s appropriate with yours. Good luck!