I was recently staying in Vegas for a business trip, and was stuck at the Hampton Inn hotel (which apparently doesn't have any restaurants near it!). The front desk staff recommended delivery, and I discovered this delivery restaurant on Yelp.
I ordered from Table Thai and got my food within 35-40 minutes (as promised). Overall, the food was very solid. In fact, I ordered twice from this restaurant during my 3 day staff, and was really impressed with the mango sticky rice (YUM!) and eggplant veggie stir fry. Overall, glad I found it as it was one of the few delivery places near my hotel!