This restaurant in only a few blocks from where I live and I'm pretty addicted to all varieties of curry, so I go here often. The service seems to be getting better and better. I have had bad waitresses at this location, but that was months ago and my most recent experiences were all positive. One thing I absolutely love about Lao Laan Xang is that any substitution seems to be fine with them. If I want potatoes instead of tofu or meat, they can make it happen. I appreciate that. As a fan of very spicy foods, I have to say that even their "Native Lao" isn't as spicy as I'd like it, but the waitresses have never had any problem getting me some extra spice from the kitchen.
In conclusion, their curry is great, the staff is helpful (and seems to be getting more so all the time), and their location will keep me coming back.