My boss and I did the Aeroplan reward and used 79K miles to get an hour in Air Canada's flight simulator last night. It was sooo much fun. A totally amazing experience.
Luckily there was no passengers on board as I think we had three of the scariest landings I 've ever seen and a couple engine burn outs. I actually bounced the plane off the runway on my landing but the instructor helped get control and then we swerved back and forth until we came to a stop....I don't think anybody would have wanted to be on that flight!!
I would recomend the reward to anyone who has a lot of miles and is contemplating it. There is no other way to get into the AC sim except through a reward and it is quite an awesome experience.