equipment break in period


I just bought a used Cary SLP-98 F1 and a used Cary 120s MKII (both with new unused tubes)
I have all used AudioQuest Colorado interconnects.

During the break-in period of approx 100 hours, do I need to be playing music similar to what I will be listening too?
Does the volume make a difference?
Can I turn off the equipment at night and "continue" the next day or must I leave everything "on" continuously?

Any help / thoughts will be greatly appreciated.
Thanks in advance.
Bob
callglobalbob
Do not leave tubed equipment on for hours unattended! 

Type of music during break in is irrelevant and for goodness sake, just use a reasonable volume 
Both suggestions are "Great" advice.
Thanks.