I agree with you. You shouldn't have to do this. Yet if you did, you would save yourself time and effort, be less frustrated during an international trip, and have more confidence in your service.
We have had numerous threads in recent years on TUG about the changing service quality at many companies. This is just another example - IMHO, none of us should rely upon any customer service or representative of a company. I had this experience myself a few weeks ago after talking with a rep from a major bank…who assured me my request would be handled in a specific process, and ultimately - of course - was not. Why are any of us surprised when we realize these employees just aren't all reliable?
So, once again, in order to minimize disruption and set proper expectations, I recommend doing your own independent research and not relying on any company representative whenever possible.