This tour although advertised as departing San Diego, actually starts in Tijuana. You must walk over the border yourself, but they do not tell you that until the morning of the tour, they say meet outside McDonald's and then they contact you to tell you meeting point has changed and you have to walk over to Tijuana. This is why people miss the tour, especially if you are visiting from another country and your phone isn't working here in the USA. So it is a very frustrating start, hanging around a McDonald's and waiting for a guide who is never going to show. The tour itself was good and our two guides were very nice guys, Umberto, and Tadio. But it should be emphasised THIS TOUR STARTS IN TIJUANA AND NOT IN SAN DIEGO AS ADVERTISED.