Hey hey hey,
So I'm now 4 months out and I have to start thinking about our family dinner for the first night we arrive in Vegas. Our parents have only met once before so we thought it would be nice if on our first night we all went out for dinner (immediate family/some of the WP) and had some food and good conversation before the hordes of guests arrive.
Thought I'd pick your brains before I get in over my head in research, because you are all such helpful fellow Vegas-goers that I know SOMEONE has to have some good info for me.

Parameters: Would really like a space with a private dining area (though I *might* be open to a restaurant without that, if it were really spectacular and still allowed for conversation) and ideally around $40-50 bucks a head--or less!-- would be stellar. It's for about 12 people, and FI and I would be footing the bill so I'd prefer not to go too crazy.
I initially was thinking a Brazilian steakhouse might be fun, but Pampas has kinda crappy reviews. Anyone ever been to Samba? Also, anyone know of any good buffets that would have a private room that I would not have to pay $1,500 for (a la the Wynn)? Any other reccos outside of that?
TIA!
ETA: Also, nothing "too" ethnic, unfortunately. FI's family are kind of afraid of ethnic food, otherwise I would be looking for a good Indian, Thai, or Japanese place.