There are two things that I suggest you do this afternoon:
1. Once you have made it to Taupo, get on your mountain bike for a 5-10min spin. This is a great way of flushing travel fatigue out of the legs, as well as checking that your bike is working the way it should be.
2. Have a 30-60min rest. Whether a sleep, or some downtime, to chill out and read a book. This is a great opportunity to charge your bodies batteries, ready for tomorrow.
I look forward to seeing you out on course. Good luck, and, remember to smile, and enjoy yourself.