It is posted on the six flags app or monthly emails. It comes sporadically so it is difficult to plan ahead. Best to check your app under "My rewards and coupons" to see if any days posted. Don't forget to press like on this answer! 😉
The app shows the days along with member benefits online and the emails. I went on Friday the 14th to use ours and I think that is the last for a while since spring break is coming up
I'm not sure, sorry I couldn't answer your question
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