re: Vegas dining--need someplace not too heavy

I'm going to second Julian Serrano it's primarily a tapas place, so lots of small plates, you can eat as much or as little as heavy or as light as you want.

That said, the strip is massive and probably has 50+ restaurants that would fit your bill. Where are you staying? Or where are you planning on being around dinner time? Wouldn't make much sense to go to Julian Serrano if you were staying at Wynn and were going back to change before going out.