Umm...it's called Splash Mountain for a reason...
It says, "You will get wet, you may get drenched"
If you're bringing valuables on a ride with a sign like that...that's your own perogative.
I, for one, don't necessarily like getting wet and walking through a park drenched...but if I'm in the mood for Splash Mountain, then I'll ride it...if I don't feel like getting wet...I don't.
I guess I'm saying...I like the jets that get you wet (now, if it was a ride like the TTA...I would not like it...because you're not expecting to get wet).
The last time I was on Splash Mountain...I was drenched head to toe...and it was only about 45 degrees out...but...at the same time, I couldn't really complain because I made my own decision to ride it.