I was happy to see Disney didn’t go with the “just retell the movie” option that seems to be the default for so many rides (or “more or less the plot of the original movie”, like Frozen)— what I’ve read doesn’t sound especially promising to me, but I’m going to bet on the imagineers to do a better job creating a narrative than I could.
I am a millennial who went on Splash Mountain at least 100x since the early 90s and I never thought the plot of the original ride was all that compelling—does anybody ride it more than once for anything other than the drops?