You all need to get your drinks through the drive thru. Not long ago, I walked into a McDonalds to get one of their frozen treats. While I was there, a lady and son (I guess - he was probably mid-20s) came in. Son was one of those special people, but that does not make this any less disgusting, it just makes it not really his fault.
He stood there with his mom person, wiped his hand back and forth across his nose I don't know how many times, but a LOT. I got through with my order, got my receipt, and proceeded to step to the side to wait. Mom and special son place their order, get their drink cups, go over to the fountain area, and I watch, in horror, as the son, who had just had his hand up, in, and on his nose several times, stick his hand right up into the ice dispenser, feel all around the sides, take his hand back out, put his hand up there again, lean down, try to look inside, take his hand out, wipe his nose again, put that hand back up in the ice dispenser....
I told the McD's people what was going on.
They did nothing.
Enjoy your cold drinks.