Very nice place, but only decent Thai Food.
First off I would like to state that I am happy a Thai Place exists on the strip. For that reason I think Lemongrass is awesome. However, the decor falls way above the food.
I came here late on a Friday night with my friend who gets out of work after 11. I mostly picked off his food as I had already eaten. I tried the veg rolls, which were tasty but not amazing and the mango sticky rice. Both were good but only mediocar. Looking over the menu they had few vegetarian friendly options and mostly meaty dishes. It seemed that rather than stick traditional thai style food the menu deviated a bit. I would come again, but only if provoked
The decor is gorgeous. High ceilings and rich brown flavors. If your going on a date, and looking for someplace nice, classy and romantic. I think you would be safe picking lemongrass.