Difficult one....!
I would say that YES in theory visa / tsa would be required. My reasoning is that as a non PPL holder, the instructor would have to log the time as Dual given, as he would probably be operating outside of his or her licence privileges by taking you as a fare paying passenger. As he must log it as dual given, you are in theory receiving training towards a licence or rating......
If you're there in July / Aug I'll take you for free if you want
