It's the day of the moot. Your stomach is full of butterflies. You should have prepared and rehearsed your speech, and discussed what each of you will say with your mooting partner, to prevent any overlap of arguments. If there is time, it is a good idea to practise the speeches in front of each other. If you have never been to the room where the moot is being held, it is helpful to pay it a visit in advance, to familiarise yourself with the layout.
Familiar territory is less intimidating.
What to wear You may have been given guidance on what to wear by your mooting officer, or in your mooting rules. Some friendly moots are more relaxed as regards dress code, others have stricter standards. It generally adds to the atmosphere of the moot if the advocates are smartly dressed in business-like attire. Some universities will also provide black gowns for mooters - most lecturers and professors will own one, which they may be willing to loan for a moot. These are often hard to fasten, and tend to get in the way, but do create a court like feeling for the proceedings.