Been there twice for dinner once for breakfast...and that's it, I'm done. I think that the value here is lousy (for the record, I mostly feel similarly about Pok Pok). And, most important, I just don't think anything here is that great to warrant a return visit.
Best thing we had was the Kai Krapao Khai Dao and it's a small serving. Sue and I shared a couple of dishes and there were no leftovers which is always the case at Chiang Mai, and where I like the food better anyway.
Breakfast choices are limited...and seriously, $10 for a bowl of jook/congee with an egg on it and very little in it when you can (and should) go to Kenny's Noodle House and get better for $7.50? Also, not a fan of the $3.50 pour over small single cup of coffee. The pandan coconut custard is delicious, but dipping tiny cruellers in that for breakfast with one cup of coffee seems more like dessert. We tried a steamed bun ($3.50) and that was pretty good, the filling was delicious. Better than one you can get for $1.50 at Binh Minh?...maybe, but not by much.
I ordered an egg on the side because I was still hungry and I had to send my egg back because it was raw...since it was served in a small glass, the cook and the server should really have noticed (really, there was no white, it was raw)...but they just opened so I'm not really gonna knock them on service even though there was only one other table there at the time (dinner service was much better on two other visits, anyway). It's not a reason I would not go back there.
I know that Andy has plenty of folks that like his concepts (and I liked Ping better, FWIW, sorry it is gone), so I am sure he'll do just fine without us, but I haven't eaten anything here I need to have again, and not when there is now as good or better Thai food in town, (and Chinese and Viet equivalents of the same dishes) IMO.
My GF, who has been to Thailand and has adopted their way of eating (she likes to use a big spoon with a fork as a pusher for just about everything she eats), is highly annoyed that she has to ask for a fork and spoon (and finds it odd that there are chopsticks on the table - though it amused us that one packet of chopsticks she grabbed had 3 chopsticks in it ;o)...especially while a server tries to explain "the concept" to her.
I am sure there will be a steady stream of folks (folks who would never go to Kenny's) paying way more than anyone should for rice porridge in a sanitized setting with servers who speak English...all the while saying, wow, this is different, we have never had this in Portland. Yes, we have had this in Portland for quite a while, but you actually have to go to/past 82nd to find it, and yes, you might be the only English-speaking white person there.
Good luck to Andy Ricker, and yes, I'll probably hit WSL or Pok Pok Noi for a wing/limeade fix every now and then...but chances are good that I won't be going back to Sen Yai. YMMV