Push the button twice on your fob as you walk up to it. It works for me.My wife had the same issue with her last car's FOB. She eventually learned to not push the button down too long to unlock the doors.
I can't imagine a life where the key must be used to unlock the door. It seems so foreign to me now. What does suck is the fact that the passenger doors no longer have the key hole. So, you're screwed if you're a gentleman opening the door for your wife / girlfriend (or both).