just get a few brown baht notes out of your wallet and they'd shag anything with a pulse for you.
Not really, I've been told no more times than I can remember. In general I think upping the offer works more with girls, IMHO. I find ladyboys slightly more unflexable once they have said no to something whereas girls readily compromise. At Check-inn bar once had several in a row turn me down, one lb (who was up for it) went down to try and find another into it while I finished up with a third, but she had no luck. Bee, was able to do it, as a top only, she refused to be fucked, can't remember the name of the girl who we eventually double teamed.
Of course, I don't offer as much to LBs also, so maybe that was it. Most I ever offered ladyboys was 5k extra to fuck each other.