I have been reading this forum for a couple of weeks and have noticed that most people recommend small group tours. I will be travelling solo and am looking for a tour operator that will allow me to join 2 or 3 other people on a standard itinerary. I have e-mailed a few of the mentioned small group operators, but they all have replied that they only do custom tours and don't join people together. Does anyone have any recommendations for small group operators that will let me join a pre-existing tour without having 20 people on the tour? I am looking for a 8 to 10 day safari that includes Serengeti.