Agree this campaign is ostensibly about drugs, but all the reports I've been reading over the past month show total failure to find anything other than a few low level pushers and some positive urine tests.
It is a in all likely-hood a
PR campaign which is all about show not substance, with those controlling the trade tipped off well in advance.
There is however a strong
PR message about cleaning up the sin city image of Pattaya and that does suggest the sex trade is being targetted by some-one, although I think we all agree they are doing the "King Kanute" thing with no chance of success.
I'm not sure where you are going with your item 2. re underage. I dont think any of the posters here are bemoaning that element of the clean up.