Sounds like you had a great time! I was over in L.A early to mid september also, and i got the chance to look around the CSI set, beacuse i had been in contact with the production designer on the show, and so got a chance to look around.
Like the N.Y sets the Vegas ones are amazing, they're so clean looking and the technolgy and attention to detail in them is amazing, it is surreal to be in them, and then go back to watching it on t.v and to think ive been on there!
Where is the N.Y one filmed, i know Vegas is at universal, but not about the other two.