Very old scam. We had this happen to us many years ago at the Mirage. We were playing the $1 horoscope machines, when we cashed out, a lady with a baby stroller, convenietly hit my husband....Oh, Senor, sorry, but can you spare some money too feed my baby? Sure, but, let's get a look at the little darlin. I looked in the stroller and it was a baby doll covered in a blanket, and she high tailed it. Alerted security, but she was long gone.
Now this is a story, we were walking into the Rio and some guy gave my hubby a hard luck story, hubby gave the guy $10. As we were leaving the Rio, this guy is sitting at a BJ table, hubby saw him, walked up to him and asked for his $10 back. This guy was shocked that my hubby recognized him and he gave hubby his $10.