The Water Works
I mean to say the water is functional! (I'm not crying).
Material Blueprint | slow water
BluePrint | Collision Display TExt
If the player enters this trigger box, display text. Hide the text when the player is not in the trigger.
Blueprint | Text rotation
Begin with placing the text actor in the scene. Get both the text actor and player camera's local position. Subtract their Vectors and set that result as the actor's rotation.