Think this is what you are looking for:
undercovertourist.com/planning/when-to-visit.html
I'm interested in the logic behind it though, for example it shows Island's of Adventure as a Red park on Tuesdays throughout October (i.e. best to avoid) but a Green park on Wednesdays throughout October (i.e. best to visit).
I wonder why this would be, as I would expect most mid-week days in October to be quiter but it is clearly suggesting Tuesdays are not a good idea compared to Wednesdays - why?