I had two kids, one year apart, and we had the passport books for each of their grade 5, 6, 7 years. I had never skied in my life. The affordability of bringing one kid for free and a discount for me made skiing accessible for us. I took advantage of the discounts on lessons too.
We spent many beautiful Winter days outdoors and had the opportunity to try many different ski areas, large and small. Without those passports, we would not have had this opportunity.