Why does the man want an early appointment?

M: I have to have an appointment first thing in the morning. The doctor wants to do me tests and
I mustn’t eat for twelve hours before that. I’m right, aren’t I?
W: Yes. She said the best way is to go without breakfast and come in early.
M: Yeah. Then I can have a snack and not miss too much time at work.

W: There’s a belief that real coffee’s much more difficult to make and also that it’s more expensive but certainly with the advent of the cafetiere—the plunger pot—it’s really very simple to make indeed.
M: The coffee companies spend a lot of money trying to persuade us you can get real coffee from an instant coffee jar—we see people not being able to tell the difference...
W: No, of course you can tell the difference, it’s extremely obvious.