I had been given a voucher for the Bridge Climb as a birthday gift, and it is certainly not something I would pick for myself being terrified of heights!
I have to say however that apart from the actual ladder climbing part to get on & off the bridge, it wasn't too difficult, and even as a previously city dwelling Sydneysider, the views were so spectacular that it took my mind completely off the height altogether.
We did the twilight climb which was absolutely stunning, and something I'd recommend.
Really enjoyed the experience, but probably wouldn't do it again, as I found the 300 odd dollar price tag (paid for the other ticket), way over the top, even for our overpriced land of Oz.
* Do NOT drink beforehand...take that seriously. They literally breath test you before you go up.
* It's a 'go ahead rain, hail or shine' activity, and you will lose your money if you book and can't go last minute, so be very, very careful about timing the experience at the right time of year!
* The locker storage is super secure (but small), so don't be afraid to time it after doing other things where you might have a small backpack with you.