He did know that. He used Stealth Boys to sneak on the raft and ran out of them when they arrived to The Fort. Then he nabs some Legion armor as a disguise, and almost gets to the bunker.Woem said:I know that from Yes Man. But surely Benny knew just as well that Legion built a camp right on top of it? Or wasn't he aware of that?
His haircut gave him away, he got captured, and that's what happens when you read.
Also, you do realize Benny isn't really after an "indepenent Vegas" either, right? He's just lying to your face and trying to use Yes Man to overthrow Mr. House and take his place. Coup d'état.