Just got back from two weeks in Europe and thought I'd report back. Orange's Holiday package worked great for me in the UK, Poland and Germany as well as in Brussels for a few hours while transiting through Belgium and France. I got the 20GB package with a French phone number for €40 and only used about 5.5GB but all I used it for was maps, email, FB, light web browsing but hardly any streaming. Probably could have gotten away with the 8GB for €20 but the last thing I wanted was to be in the middle of traveling between cities and run out of data. One thing to note is to make sure you have data roaming for that line turned on or your data speeds will be horrible. Never did try calling home over cell data so I don't know if that actually worked right or not but calling over hotel wi-fi worked fine. I wish AT&T's international package wasn't $40/week or it'd have been perfect. I didn't bother registering the eSIM since I have no plans to return to Europe this year.