Si,
Once you get the booklet thing that comes with the package, it gives you a choice of locations, and it also tells you that typically you will be flying a DC-10 or MD-83 sim, and you will typically take off and land from Gatwick. I actually took off and landed from New York, so that bit was wrong. I wasn't given a choice as to which sim I could go on, I was literally just taken to the DC-10 simulator. You are supposed to get 20 minutes, so I was lucky to get 30 actually
I think that it was long enough to do what I wanted to do, which was to get some impression of the handling, and take off and land the thing.
Hope that helps
G-BPEC