Hi Mark,
For the ultimate in a private tour at Walt Disney World, you could look into booking a Private Premium VIP Tour through
Disney's VIP Tour Services. You and your wife would have your own Disney tour guide customize a tour for just for the two of you. This is the most individual of any Walt Disney World tour. Please do read the website that I linked for price, minimum length of time for the tour, and other information. If you decide to book a VIP tour, you can do so by calling 407-560-4033.
If you decide that the Private Premium VIP Tour is not right for you, I have had fabulous service on many of the
Walt Disney World Tours. Although these are not private, I have always found the cast members leading them to be gracious and knowledgeable. I truly enjoy interacting with the cast members on these tours, so I often make a point to stay near to them and ask many questions. A tip for experiencing a tour with less guests, though it is not guaranteed, is to choose the latest departing time for the tour in which you are interested. A friend and I recently took the
World Showcase: DestiNations Discovered tour, which is a five-hour walking tour of World Showcase at Epcot. There were only six guests total on our particular tour, so we had a wonderfully personalized experience. Another tour that I enjoyed that does typically have a slightly larger group of guests but is a truly unique experience is the
Behind the Seeds Tour at Epcot, where you tour and learn about the greenhouses at The Land Pavilion.
Please do let us know if you have any further questions, Mark!