What a great subject, something I have experience first hand of!!
I have never been to latin america but I have been all over Asia.
SW is not "legal" in Philippines, China, Thailand or any other country I have lived in or visited. However it accepted and tolerated in certain degrees everywhere.
In Hong Kong you will never find street girls, but you will find entire housing buildings where girls work out of a many single apartments. If you step away from the tourist areas to the area of the locals its more apparent. You can pass a apartment building it may even have a chalk board of room numbers you can visit for services. In the tourist areas you will find bars and almost any single girl in that bar is an escort. But you will not find girls walking the streets out side the bars.
In Thailand two examples. Bangkok has what is called Nana Plaza. The entire area for many blocks in each direction are full of Bars, Clubs, Beer Gardens and Massage stores. Girls will be hang out directly outside the places, but do not really walk the streets as I have seen done in the US. As in China and in the Philippines there are maybe 700-1000 girls in the bars each night, and each bar has a boss who watches each the girls in the bar. If the girl finds a customer, the boss knows and sees them leave the bar. The girl will pay the bar a commission or bar fine usually before she will leave with the customer. She is free go any bar, she pays nothing if she leave alone. She may hang out in many different bars before evening is done. There are a few Zones where the streets are filled with girls, but they are not really "walking" the streets they are mostly getting foods, see friends out side large loud bars or whatever. If they stumble across a guy then good for them is the attitude. In Pattaya is the sex capitol of world is and is very famous "walking street" . Literally has a iron steel arches at the entrance so you know exactly where it starts. This is a Zone but in real the entire one half the city is a Zone. Walking street is simple almost a Km long and here you will find girls in street and every store has a girls that are escort. This is where i see my first and only Monkey show, so gross but so funny, and no its not sex.
Philippines is same with small exception. In most city is a small area that has concentrate SW. Clubs and bars and cafe. In Manila it is the area where Makati goes from modern world to old world. This section is where we call Borgus street. Also there is another area called EDSA complex. Here you will find girls and lady boy walking streets. But they keep to strict area. Each place not more than one Km long. But any bar anywhere in Manila almost has at least a few girls to 50 girls working in it By working I mean they are there and always pay a commission if they get customer . When I was first younger I was to meet a few friends at a plaza to go out for shopping. I was very early and wanted a snack and have a drink. I go in bar and order. A guy at table next to me try talk to me. A girl walk up to me and told me i do not work here and single girls not allowed talk to the guy customers. Angeles is a city devoted to SW. Field ave like the walking street in Thailand. You will never find girls out of that Zone walk the streets. At one time bars had actually a person that the government license is called a GRO. GRO means Gust Relations Officer, hahah, These girls pay to be bar girls and not get hassle by police. But that was long ago and now nobody pay and police don't care.
I think also that many Americans not understand that most tourist do not drive around looking for fuck in big foreign cities. Driving is a hell in Bangkok, Manila and Macau. Only the brave and stupid drive. There is no way to pull over and chat a girl walking street. There is no where to park and often just walking faster than car in these zone. If you drive you will always make mistake and the police will always want a bribe to not give you ticket. The idea of SW in these countries is wide accepted. But Asians are a shy. I have friends who are bar girls and every day they will go from where they live to where they work. And Every day what they wear when they get to the zone completely different from what they wear to the work.
Just my experience.
Christine