First time: online to live play - err.... help?

[Arp220]

Ok, so I'm off to vegas with the girlfriend in a month or two. And the girlfriend being the crazy fool that she is, wants me to play poker at Bellagio or Wynn or Venetian or some other such 'nice' room because it would be 'nice'. I've never played NL live before, and am terrified. The girlfriend is one mad bitch. I'm probably going to marry her. Or something.

Anyway, I've played online for about two months, and have got to the stage where I run a decent profit at NL50, and a very small profit at NL100 (on average on Full Tilt).

Questions:

1 - should I even consider playing NL at Bellagio or Venetian or whatever?

2 - If I do, what limits should I play such that (a) I won't get completely assraped, and (b) preferably have a shot at winning something? I'll likely be playing late evenings on weekdays, if thats relevant...