I changed my message telling people I was out of the country and would not be returning calls until I got home. I also gave my daughter's phone # (who wasnt with us) and said if it was urgent to call her and she would call us. I then did not check (listen to) any messages that were left until I got back into the states.
I did use my phone to make calls while in Canada for both calling home and calling places in Canada. I did use the phone alot to find places (campgrounds, restaurants), taxis etc and it came in real handy, but I was EXTREMELY cautious not to use any features that required data unless I had wi-fi.
Wouldn't you agree that making an Edge Off switch would make our lives easier though?