Me and my wife are going down for the first time next month. So far we have managed all of our plans through 1 account in my name. The box "plans managed by me" is checked for her name. My question is that we want to download the app on her phone so that when we are in the parks we don't have to worry about our phones dying since we will have two phones at our disposal. Can we just login under my account on her phone as well or should she create a login in her name and set it up? Would that mess up her plans being managed by me at all?