Do you have to stand at Parade Rest for a Senior NCO when not in uniform?

Yes. We are on duty 24/7, no matter what we are wearing. It is not about what you have to do, it is about what you should do. You should want to do the right thing.

Look Man.....Like this brotha....when I stand at parade rest to a superior whether in uniform or not....I do it out of honor to our past, I do it cuz I earned the RIGHT....to salute, or stand at parade rest. I know that sounds kind ol fashion....I'm a ol skool NCO..(I can spell it that way cuz I'm ol skool).....

I know I'm jesting a bit......I take pride of the past. Of what we as a country and a NCO Corp has accomplished. I do not mind standing at parade rest...even as old as I am.

I guess it really depends on the situation. I have never had anyone senior to me say anything about standing at parade rest while out of uniform. Doesn't mean you shouldn't, just my experience. I will always remember this one time in college: the marching band was borrowing the colors from the ROTC program for a performance. Myself and another member of the band (both of us in civilian clothing) went to meet the POC which happened to be a CPT. I knocked on the office door and the CPT invited us in. The CPT walked up to me and shock my hand as we introduced ourselves to each other. The other guy snaps to attention and just stood there as me and the CPT chit chatted. The CPT finally noticed the other guy standing at attention and asked, "What's wrong with this guy?" I shrugged my shoulders and just said he was a newbie.

Customs and Courteys, on/off duty, in uniform and out

Regs apply 24/7

Character.
The junior will show good character to give respect.
The senior will in return respect the junior by setting a comfortable tone, thus showing good character.

If the senior does not initiate a less formal engagement it should be in a private setting. Otherwise the senior will be showing the lack of character.

My opinion.

No regulations needed.

If you know who they are, and what rank they are, YES!

It depends on the situation. You run into one of your NCOs at a bar and y'all are both drinking no. If you are out and about and you run into an NCO use your best judgement. People act like going to parade rest for someone is the hardest shit in the world.

I spent 24 years of my 30 as an enlisted. I rode tge rank train quite a frw times. ( E-1 to E-4. E-4 to E-5. E5 to E4. E4 to E-1. ) Then i wised up. Protocol is there for many reasons. Once i found that out, i was golden and went to E7 I went to the darkside. I never saw O1.

Now for extra credit, explain to me how my DOR for Captain is before my DOR for E7?

it really could come down to the situation,Ive had NCO's and even in the position told my troops knock that shit off and relax ...on the other side if im tearing you a new one for something stupid you may have done , you better be locked up.