Yes, the only difference is about Samsung Pay and Wi-Fi calling, it may not work. Because this phone is for Europe and not especially Switzerland. :)

I suspect that this is related to Google Services

I don't own this exact device but I do have some issues too with google pay. There are just a couple banks in Switzerland that support Google Pay, here's a list https://support.google.com/pay/answer/9095913?hl=de I guess it's going to be the same thing with samsung pay. hope this helps

No, this promotion was only valid last year.