Yes its on Fridays from 4pm to 8pm. There is a queue to enter, but it moves pretty fast. They let you in at around 3:45pm. So its better to be there around 3:20 or 6pm to avoid rush
Yes. It's free on fridays after 4 pm.
No, but you may benefit from deductions depending on the category you are eligible for
It was every Friday after 4 pm. I don't know if they change something
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