Yeah the tier system on the pricing and AP blockout dates are usually a good guide. Then again, some say the weekends are better now than some weekdays. I say this over and over to people looking for when it's best to go. Just don't worry about it and get there at rope drop. It's so much better than doing the same at WDW. Hit the ground running and get as much done as possible before 11am. Obviously, don't go in October unless you just really love Halloween decorations. For summer, June to early July is good. For the rest, it's a crap shoot.