What does that mean if early reporting is not addressed on my orders (it doesn't have "not authorized" or "authorized # of days" on them)?

Good question!
When early report is authorized, it's 60 days. When it's not stated, you are authorized 30 days early report.

I didn't go through my S-1 because they would never get back to me if I did. I directly called my branch manager and asked if I can have early report authorized, he said yes uonto 60 days took him about 5 seconds to add it and bam! It was done. Just got to JBLM 60 days earlier ;)

Contact your S-1 for clarification.