Anecdotal evidence only, but outside the parks as a longtime local I haven't seen a July this dead in years. I can get day-of dining reservations I shouldn't be able to get in peak season. Traffic throughout the area is steady but not the typical peak season insane, even on 192 and I4. Disney Springs seems to have lower crowds, easier parking and plenty of walk-up dining availability.
We have the water park after 2 passes (best value ever!), have been frequently using them this June / July. Both water parks most afternoons have very very quiet, even with good weather. By 5-6pm they are a ghost town, with walk-ons everywhere and still 2 operating hours left in the day.