Last time we went, they let us into the castle the second the clock struck our reservation time. Not a half a second sooner (the cast member couldn’t care less that in July heat a 5 month-pregnant woman, a toddler, and 2 senior citizens needed to get into a/c). Once you are in the castle, you’re in an a/c lobby sort of area. Quickness of seating depends if you’ve preordered, but regardless, all of the castle has a/c.