Apologies if I'm teaching a granny to such eggs John...
If you're entering on the day, get there at least an hour earlier. Race start is 10am so get there for 9am.
At the start there'll be a registration tent where you hand over your tenner and get a race number, which you pin to the front of your top with safety pins you'll be given.
Instructions specify to be at the start line around 20mins before the start.
Parking: voucher parking by North Road, College Rd, City Hall etc or in the Sophia gardens Car Park.