#11 You buy off the shelf keypads and buttons for a lot of machines and devices, the braille is printed on them so they can serve other purposes. If its in a work place, blind people will ask someone about the numbers and then remember the thing they like buying is number 123, and be able to buy it when they want to.

#5 Yes.

#13 Maybe she did, you know she's a supervillian or something.

#12 well, that's not wrong

#10 - It's just a pun on words, they're graduating so instead of congratulations it's ConGRADulations. At least, that's the way I took it.