I don't think I've ever made a trip to Las Vegas without making a stop here for the best Thai food I've had with the caveat of having never traveled to Thailand. Best in its class at what is still a very fair price. Our go-to favorites are the Nam kao tod, Khao soi, one of their various catfish dishes, and Tom kha soup. If you're willing to splurge a little more, the garlic prawns and crispy duck dishes on the back menu will absolutely linger in the back of your mind until you make your way back here again.
Online reservations make things easier now but otherwise show up before opening time to get seats without any trouble.