It's about an hour
Its posted as an hour tour. Because it's fairly a large group the tour guide must ensure the masses are at the checkpoint before starting the brief. It is all dependant on the group make up such as age group etc. In my 3 times experience, the timeline was about the same.
Took about an hour and 15 minutes when I went.
Depending on the person, some would walk slowly through this and some aren't interested, if interested I would say less than an hour to hour and a half.
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