It looks like its a bug if u enter tops whit 2 much bad rep for legion. I roamed free and entered the strip in a very late stage so
And i dont have any other savefiles
from fallout wikia: There's a glitch which can prevent you from being able to speak with Vulpes, even when he triggers the conversation. The camera will zoom in on him like it would usually do when initiating conversation, but will then quickly retract, bringing the player back into control. Reloading to a recent save doesn't seem to fix the issue. A possible fix is to reload to a save before confronting Benny, then walking out of the casino before talking to http://fallout.wikia.com/wiki/Yes_Man, this has been observed to work in several cases. This may be caused by obtaining a large amount of legion infamy.