The advantage of being the guide is that you are generally more energetic. When walking through cities however it can be very tiresome to have to wait every five seconds. Another thing that's very annoying is that there's always someone who has to go to the bathroom every hour for some reason.
But these are minor issues. One of the bigger problems this particular trip was that one young girl was pretty much excluded by the other younger girls and I had to do something about it. But the thing was: she was simply a bitch. She cries because they all hate her she says, but then does nothing to help me fix the situation at all. One can steer group dynamics, but there are generally two or three people in my group who are either cunts, retarded or incredibly filthy. Obviously the others make fun of them (yes, 60 year olds do this too) and there's very little I can do to help them.