I don't see why it would be a problem. I know alot of the times the driver will step outside while people are loading and unloading (when it isn't a busy time of the day). So, if you stand towards the front section, hopefully you'll be able to catch them.
Also, the other monorail cast members (the ones directing you where to go and whatnot) drive the monorail as well if I'm not mistaken. You could ask them too if you wanted.