Mike - Not sure but, I would just carry it up like you are suppose to have it. I do not think they would say anything. If you park at the tower parking lot then you are real close to the car anyway. It is worth a shot anyway. A small pocket tripod would have been nice in the restaurant. Keep in mind though the main floor of the restaurant does move so you cannot do any long exposure stuff.
I will say that you will get much better pics from the restaurant than the observation deck. Bring glass cleaner and paper towels and/or if you are tripod can get up to about 7 feet then maybe you get pics up above the glass on the outside part of the observation deck. The restaurant glass was much cleaner IMO. I got lots of pics and some are decent but I have not really done much post process on them.
Here are few more if u want to look - pretty much straight out of the camera though.
http://www.flickr.com/photos/photoby...7594185377533/