You are making it too hard. Yes, very very few of these ladies speak English - but it has never been a particular problem for me - in my many many years of experience with Asian WGs. You most likely can’t book a 141 walk up – except as you have noted with the very small portion of English speaking girls. You just go - have several back ups in case your first and second choice is not available. You may need to have 4 or 5 back ups. Just go out and knock on the door - or as cantgetenough suggest try a hotel girl. It’s fairly easy once you get your self out there. Good luck man