I need Opinions!

Hey ladies, so my five year anniversary with my boyfriend  is coming up next weekend, and he really wants to go to Vegas just him and I. Obviously I am not going to drink or party over there, but do you guys think it's a bad idea or has anyone ever gone while being pregnant? Also, I enjoy gambling at the tables (black jack) but idk if the smell and smoke is going to be too bad for the baby... 
He's stopped drinking and partying to be supportive but I want him to have fun as well! Lol.