My mum was looking (but eventually went with RNY). I know the Wesley, as I am from Brisbane. It won't be performed *in* ICU but at a hospital that has one - not sure that's necessary, to be honest. Mine was in a clinic and they had admitting rights to a nearby hospital.
I would be very sceptical that it is the true DS, though. I did a lot of research (would have gone home for mine if I could have!) and for my mum. A lot are really SIPS, and once you're on the table you can't exactly watch to make sure they do what they've promised. If there's any doubt about what you're getting, given your previous surgeries, I would not go ahead. Imagine reading your operative report and finding out you got SIPS instead?