I just got back from Vientianne, i went a few times to bar pen yang, wich was a good atmosphere, but not so many girls or lb inside!
When i went back to my hotel around midnight, there where many lb on the street on their motorbikes, many of them where very (to) pushy and even anoying!
One was quit sweet and i took her to my room for a st, we had one hell of a hot hour, this one was really very nice, only she did not have boobs!
Also the second night something simmular happened with another (very beatyfull face) lb, but also she did not have boobs!
Conclusion, if you like lb and you don't mind them not having boobies, you can find your thing here for sure, for the rest it is a not so nice place, whit only very little things to do in the day time and only a couple of drinking places in the night time!