One day I was looking in my adventure orders and I accidentally clicked the left chest and it gave me a rare. Previously, I did another adventure with the same order and I clicked the top right chest, and it gave me a freakin' tiara.
So, don't get angry to people when they tell you orders. Don't get angry at them when the order doesn't work. You know why? AJ has a chest sequence.
For example, when you do a certain order, then you click the top right chest, it will give you rares. It will work 5 times (either lesser or more). Then after that you should click either the top left or the bottom right chest in order to get the rares.
That's it. Now you know adventure chests have a sequence!
