With the addition of Tiana’s Bayou Adventure to the Walt Disney World and Disneyland official websites, the height requirement has been confirmed.
Tiana’s Bayou Adventure Height Requirement
Guests will need to be 40″ (102cm) or taller to ride. This is the same as the former Splash Mountain, which Tiana’s Bayou Adventure has taken over. The attraction will use the same ride system as its predecessor, meaning there was no change to the existing requirements.