Each quick service restaurant in WDW has lighted signs overhead that are large enough to be seen from another planet. They only have about 8 choices total. You can't fix stupid.
The only real problem I have had is waiting behind a couple that went through, at least, 6 credit card before they found one that something could be charged too. Then they insisted that the cashier try each one of them again, because, of course, there wasn't any way that they could be maxed out.
Anyway, when I finally got to the register I said to the cashier with a big smile on my face. 'I'm not sure what to do... all I have is cash... do you still take that?' She just chuckled and took my order, then before I could leave she told me to wait a minute and went to the counter and got two really good chocolate chip cookies and said thanks for your patience.