Unless you have a criminal record I am fairly certain that you have nothing to worry about. I know some people that know some people that do far worse than listen to lonely business men and have never had any issues. As long as you are not trying to bring contraband ( i.e narcotics ) and have no criminal record into their country they aren't going to bother you. Just because they have facial recognition software doesn't mean much unless you give them a reason or act nervous around them when they question you. As far as what you do for an occupation you may need to practice that one ;)