An embroidered logo polo shirt, khakis, a lanyard with a laminated pass, and a clipboard can get you pretty far. Get one of those plastic ones that open up to hold papers, and put some stickers on it, then tear the corners off a couple. Carry a clicky pen, and click it a lot. Have a fresh haircut. Nobody wants to talk to that guy.
An embroidered logo polo shirt, khakis, a lanyard with a laminated pass, and a clipboard can get you pretty far. Get one of those plastic ones that open up to hold papers, and put some stickers on it, then tear the corners off a couple. Carry a clicky pen, and click it a lot. Have a fresh haircut. Nobody wants to talk to that guy.
and if that fails, slip em a couple hundred bucks