I've heard that of you have children with you, your spouse or partner is allowed to accompany you to the gate without a ticket. Is this true?

Actually, you can, you just have to call the airline in advance and get a gate pass, not a boarding pass

No one goes through security without ID & Boarding Pass.

Nope

I think that is only at the airport in Orlando.

Not true. You could askcfor airport assistance.

I'm pretty sure u need a boarding pass