Others involved in the organising can say about the time meals are likely to be served. Looking at internet sources:
1. The race starts at 2.00pm .
2. Assume the race take 1.5 hours - so if well oragnised riders leave promptly then thay could leave by 3.30pm or say 4pm.
It is 124 km from Speers Point to Wooton, which is estimated to take 1 hr 50 minutes. So you might return home by say 6.00pm.
My suggestion - shower in a can and get changed in to your dancing clothes at Wooton...:-)