Has anyone with mobility issues (wheel chair or EVC) taken the modified tour? I want my family to go on the regular trek, but, I would also like to participate with the modified tour if it is worth while. I do not want the others to sacrifice the full tour, would there be any problem with only one person going on the modified trek? If you have done it, what all did you get to see and do? And did anyone else in your group take the full version to compare it to?