I received a flyer in the mail. Some nights say "free" on them. Is that true? Or did I miss something ?

Its true! They will tell you how many nights you get for free and you can select from those days. Have fun!

Yes usually it's weekdays, all you need is $100 to reserve the room. It's not charged to your card just held like a refundable deposit.

Yes it's true, they tell you what days are free