lumone,
I believe a few of us have posted biased opinions of MBA Tour as we had attended school events prior to attending the MBA tour and felt that the school events gave a better picture.
However, the tour is definitely good, especially in your case when it is not possible to go to any school.
Before you go, research the schools that you want to talk about. It tends to get a bit overwhelming at times as there are quite a few schools. Select the ones you want to find information about.
Be patient, and jot down all the questions you may want to ask ad-com officers. You will not get many chances to meet everyone and spend more than 5 minutes as 10 other applicants will be breathing down your neck.
Also topmba.com organizes something similar to this and I had received a few emails. You might want to look online for this.
Do attend the event by all means as schools will tell you how they accept admissions (you will get more information by reading the threads here).
Over all it is a good program to go to, but you will be overwhelmed and feel like a headless chicken if you dont do your homework.