Hi basementcat,
Mini's seem to be pretty much water proof. My mini went for a swim in my pool, the deep end! My bad, as I was cleaning out the skimmer and had put the mini on the edge of the pool and subsequently knocked it in. <sigh> That was earlier in the year when it was too cold for me to dive in and get it, so I used the pool broom to push it to the shallow end where I could snag it with the pool net. After I got it out of the pool, I removed the atty, juice bottle, and battery and ran hot water through everything. Then I doused it good with alcohol and let it dry for a bit. It vaped fine