The type of meeting will determine which briefcase I bring, the tie and shoes I wear, the writing pad, and the pen.
And those are just the "superficials" because there is also the homework. What is the theme? What are the key points? What was said at the last meeting? Specifically what should I be listening for? Will anyone new be present? What are the ancillary issues?
The meeting prep may take longer than the meeting.
Weird, I know, but important.
As always, remember to stack the deck.