D.W.
I know $90 sounds like a lot of money (and it is). but if she is going to take kids to Six Flags 3 or more times this summer, it will more than pay for itself. I don't think it is unreasonable for her to ask for parents to chip in and help her pay for the pass. Buying a season pass is really the least expensive way to do multiple trips to Six Flags. As far as discounts on the season pass, I have never heard of any. There are usually various discounts on admission (like those mentioned in previous posts) but it is still cheaper to use a season pass if you are going 3 or more times. You can also add parking to a season pass which will pay for itself in 2 visits. Parking is $15 a day. Hope this helps.