Definitely there in early 90s.
For sure ladyboys in Nana, though mostly restricted to "their" gogos of which there were about 4 last time I went.
Unfortunately, IMO Pattaya gogos not as good as those in Nana, so didn't frequent them, except SuperBaby before it closed. Best lookers of any gogo, decent music. Only problem was the high spending Asians that also frequented the place that made it too expensive for me to take any out.