As expected:
From K2 Aviation
"Unfortunately both of our TourSaver slots have been filled for the morning of July 21st. There is one Tour saver coupon that can be used on July 20th and both spots are open July 22nd. If you have a group of four or more, you might look into the Northern lights coupon, which you can find on google.
I need to check out other options for flightseeing.