I disagree with statement 1, because using songs as a way to learn is a great option. Another thing is to choose the correct ones, because in some occasions, they don't like the songs that course books have.
I completely agree with the second statement because stablishing routines is very important for students, because they know what are going to happen.
And finally, I agree with the last idea. There are always children with different rithme of working and they need something more to do.