So I assume this will have a similar capacity to Haunted Mansion?
Typically omnimovers don't use fastpass, although both stateside versions of Haunted Mansion have used it, and although not an omnimover, Pirates of the Caribbean used fast pass in Disneyland.
Part of me expects them to use fastpass for this attraction for the first few years. In California they seem to be less inclined to use fastpass, so I'm not sure if that will be an indication for what we would expect in Florida.
I know it was mentioned that Radiator Springs Racers will use fastpass (which was to be expected), but did this come up at D23 at all? Did anyone ask any imagineers about this?