Or u set a time for school and they go to school at the time u want them to and they come back when u want them to so while i am at school my tama will be too!!!!!!!Visitors without connecting. Since only two people I know have Tamagotchis, I don't get to connect that often. However, there should be a warning before an unknown visitor arrives, just so people don't get confused.
And/or, it would be nice to have Tamagotchis that are on your Friends list drop in from time to time, even if you're not connecting with that one.