If you're considering using the Travel Pass abroad, be aware that there are caveats that Verizon doesn't mention.
They claim you can use your same exact domestic plan abroad for just $10/day. What they don't tell you is that Verizon will throttle your data rate down to 2G speeds after 500MB. That's 100 times slower than the 4G you're used to. That basically means no streaming or downloading of movies/shows, which run about 1 GB/hr. And if you're streaming Pandora, you'll get less than five hours before you're shut down.
None of this was mentioned when I signed up despite asking, "so, everything will work just like at home? And there won't be any surprises?" And even now that I know about it, it took me a half-hour of burrowing through their website to find any mention of it.
So beware. Sure, you can have your domestic plan while abroad, but you just can't actually use it.