Yes thank goodness! I was on one that was broken - ugh it was awful, but I'm sure that's far & few between.
Now be forewarned if you're using the Friendship Boats in the Epcot Resort area - if they have AC (I think they do) I have very rarely seen it on, or because the seating area is open to the outside, you just can't feel it. Not when I've ridden them anyway!