Hi, LWS,
I just used the Orange Holiday SIM in September. Worked great in cities, remote rural areas and islands, and in the countries you will be visiting, plus many more. Highly recommend. You only need one SIM plan in most of Europe because roaming is free since 2017.
Be sure to enable roaming on your phone so you can connect automatically to the local signal.
Orange Holiday also supports tethering. 10GB data, calls and texts within Europe and also North America...incoming as well. So you can send and receive texts from everyone at home, also call them. Good for 14 days, and you can top up.
If you do buy it in advance on Amazon, be sure to register the sim with Orange on line, at least 2 weeks before you leave. This will eliminate frequent texts from Orange as you approach your 14th day, reminding you to register your sim so you can top up if you need to.
If France is your arrival country into Europe, you can also buy at Orange kiosks at CDG, or at their boutiques in town. Hope this helps!