Re: Platinum pass and challenge park
I think the reason you got to go again on RipCord for the "buy one get one free" coupons was because they sell tickets by flight and not by person. So if I remember correctly, if people bought the $45 three-person flight, they all got another ride with the coupon.
Maybe Skyscraper would be the same, but since it will probably sell tickets for individual rides rather than multi-person ones, I bet you could get 2 people to go on for the price of one. Of course, that would make the most sense for capacity purposes as they will load in two person seats, so then there would be two people going for the discount and not one person going solo twice needing to get paired up with another single rider both times.
2007: RipCord
2008: RipCord/Skyscraper