I bought ponchos in June of 2014, carried them around for at least ten Disney trips, and still haven't put mine on yet, although I have used an umbrella a few times.
The Sad Bus and the "Executioner"(CM who puts the DME envelope on your Resort door) are the worst things you can see at departure,but for arrival it is definitely the "Ponchos sign" for us!lol
We were there last week and this was only true for Epcot. In fact, it somehow seemed to make AK *more* crowded both days we were there. We left after about an hour of downpours, each day, and there were more people coming in than going out when we left!
The Sad Bus and the "Executioner"(CM who puts the DME envelope on your Resort door) are the worst things you can see at departure,but for arrival it is definitely the "Ponchos sign" for us!lol