I found the test to be unpractical in that you need accurate prior knowledge of how difficult the task will be to the subject, which makes the whole situation weird.

If the hotel you are talking to is ready to make crazy things at crazy prices, they will answer “yes” to anything that can be solved by throwing money at the problem.

On the other hand, for hotels that don’t deal with lunatics, they will refuse to deal with you the moment they smell your problem is bullshit or unreasonable.

In the end, I’d think false positives would be extremely frequent with that approach.