This was a FABULOUS experience and I would highly recommend it! The total time was about 90 mins, which is spent getting dressed and harnessed for the event to ensure safety, with 30 minutes spent outside.
Our guide Josh was fantastic throughout the whole adventure! Not only did he explain the process to us in great detail, but he also acted like a Toronto tour guide in pointing out attractions in Toronto from high above. We were able to see across the lake to Niagara Falls, and on the other side to Mississauga. The weather and the view were absolutely amazing.
We were allowed to walk along the platform which is approximately the width of a sidewalk, walk along the very edge of the CN Tower, and lean over the edge forwards and backwards.
My only pet peeve is that after spending $200 on the event, which gets you the experience with a DVD of the event and 1 individual and 1 group photo, access to the SkyPod and Observation Deck and the CN Tower Ride, you have to pay an additional $25 for the complete set of photos on a USB. It would be nice to have include everything in one package. I understand that it's a once in a lifetime type opportunity, but the cost could be decreased.
A great time overall and I'm glad I went!