Hi Marcie - As I'm not 'in the know' as you are and didn't know who Franck was, I went to Reservations who told me that the Navigator and Explorer do not dock at the same port at the same time in September. They come pretty close to it, but miss by one day. She gave me a print out of their itineraries and then phoned me to say that she had spoken to Franck who confirmed the information she had given me. So it looks as if you're going to have to book another cruise on Navigator - yes??? Sorry I couldn't give you better news. Lee