I did have a couple FL lbs outside the park by soi 10 try to pickpocket me one night on my way back to the hotel, 2 were rubbing on me and i felt the third one go for my wallet pocket. I laughed it off and and wished them a good night, but if i'd been up in my tree I'd likely have been short my wallet. In 4 trips to Thailand that's the only attempt made to lighten my pockets that i'm aware of. I generally feel very safe. Don't insult the King and you'll be ok