I haven't gone to Basic Training yet, but I like to wear OCP/UCP Pants with boots outside on public grounds, is that allowed?

Don't do it before basic, and don't do it after basic... not because it is against regulation, just because it is ridiculous and the rest of us will make fun of you.

I'm fundamentally against any service member wearing uniforms off base or when not working. The Marine Corps doesn't allow utilities to be worn out in town period and for good reason. Not only are you making yourself a target, but you are also wearing a uniform you haven't earned yet.

Don't be one of those guys.

WHAT ? PVT (Join to see)
Please do not, it is not for wear in a civilian setting. Even after you have been trained to wear a uniform, DO NOT!

Civilians really don’t care.

That's ridiculous and cringe worthy.

Really awesome that you have gone to MEPS and will be a Soldier shortly.

That being said, do not do it.
1) You may get 1 of 2 types of attention. People thanking you for your service, which may make you feel awkward since you haven't served, or them asking you questions you don't have answers to. Or people giving you shit for looking ridiculous, you look ridiculous wearing half a uniform.
2) You will have PLENTY of time to wear your uniform for as long as you are in. 6 months after being in, you will be begging to get that thing off.

PVT (Join to see) Here are my thoughts and they are just mine. I can't count how many times I have seen Veterans wear their UCP/BDU bottoms. To me I think it looks stupid, when I am out in public I will usually have on a "Veteran Company" t-shirt but that's it. I don't have any stickers, magnets, veteran plates on my vehicle. No offense to those who do. That's just a personal choice. Civilians can always spot us and most Veterans can spot other veterans just by the way we talk to and move. I don't like bringing attention to the fact I am in, makes me less of a target. Haircut doesn't help. LOL
Anyways, it is great you have pride and want to so off. But as others have stated don't be that guy. Wear your uniform with pride when on duty, and when off just be you.

My advice - Do not be "That Guy". I have seen veterans and civilians wearing parts of the ACU's, usually for a purpose (Hunting, cut down pants for yard work, etc etc), but very rarely as just clothing to hang around in. Second, I am going to assume, by the title of your post, that you have enlisted, and are currently in a Delayed entry program, which means that even though you have not gone to basic yet, you are still governed by the UCMJ. Regulations (AR670-1) specifically states that you are not authorized to wear any part of your utility uniform other then for work, and that it must be a complete uniform unless otherwise stated by your CoC. Third, You are making yourself a target for those that have a political disagreement with our government, the Military is apolitical, and there are those that would like to corner individual Soldiers into compromising positions in order to further their narratives. And last, Many of us will point at you and laugh, we have a different sense of humor then the civilian side, and we absolutely love to mock and laugh at posers.

Uhmmmm, no. Total boot move and a violation of AR670-1.

I wouldn't do it, but that's just me. Were you issued a set from your unit? If so, it's YOUR responsibility to ensure that whatever you are issued is serviceable and in good condition. Don't be one of those potatoes that wears them outside to work on your rice burner or pick em up. Be smart and covet the fact that you have a set because there are many who would love to be issued a set.

The boots are one thing, break those suckers in before you go if you have the regular army issue ones. Refer to SFC Blount's response in regards to the rest of the getup.