FYI, beware of the ticket calculator not showing the ticket price for the total number of people searched for!
I put in 5 day tickets for 2 adults and 2 children, 1 park per day, and the total was only the price for the 2 children’s tickets. Silly me, I didn’t realize right away that the number was too good to be true, but I would have been a lot more upset to try to purchase tickets for 4 people and to see double the price I had budgeted for. This didn’t happen for all the dates I searched, but it did happen, so watch out.