The part that chickens me out about this one is getting wet. How wet do you get? (On average). I was shocked to get SOAKED on Pirates at WDW which is a completely dry ride at
Disneyland.
This is slightly hard to answer, because there are multiple spots on this where you could potentially get a little wet.
1. In the old days, if you watched the big drop from the bridge, it appeared that the drop caused a big splash. In reality, the actual splash came from water cannons located near the drop. They fired when a log passed them. I think there were 3 cannons, and they blasted variable amounts of water. Even still, it was never the dropping log that got blasted. The blast went up and off to the side and hit another log that was in the blast zone (in the post drop section of the ride). WDW has always retained the ability to turn them off. Typically, on cooler days, CM's always turned them off. (Who wants to walk around MK wearing soaked jeans in 50 degree weather?)
I can't say this with 100% certainty, but it is my experience that WDW no longer turns the water cannons on at all. On a very hot summer day, they were off. I think folks generally didn't love getting wet. In addition to actually getting hit by the water cannons, the log seats used to have big puddles, so riders would exit with wet bottoms. Again, I suspect this was probably unpopular with guests.
The ride still retains a few other ways to get slightly wet, but much depends on random timing and where you are seated in the log.
2. You get a little wet on the drop. I think the front seats take the brunt of this.
3. Just pas the water cannons is a waterfall. On busy days, they add extra logs, and those get backed up at the end of the ride (same as IaSW and PotC). If you pass the waterfall quickly, noody gets wet. If your log gets stuck holding beside it, the person closest to the falls gets a little wet.
4. Sometimes, when you get on the ride, your log is damp. Last time we rode Splash, our log had a definite musty smell.
I think those are the main spots worth mentioning, but I could be forgetting something. All in all, as long as the water cannons aren't running, you don't usually get more than a sprinkle.