I have done a bit of phoning around and from the information I have it seems that people who are entering small livestock will be sent one free pass to get in on the day. This will ( should) be sent out to you once you place your entry's.
extra tickets can be brought in advance for £6.80 adult, £3.50 (5-16) and £5.10 senior. or family tickets can be brought for £17.10 for 2 adults and 2 children.
here is the link to buy your extra tickets in advance
https://www.showgroundboxoffice.co.uk/s ... utumn+Show
or
you can buy at the gate on the day £8 (adults) £6 (senior) £4 (5-16) £20 family
http://www.eastofengland.org.uk/Autumn_ ... ckets.html
you also get free parking if your showing

I dont know if they send you a car park ticket or you just park in a different car park but make sure you check on the day

.
caveys and rabbits you get 2 passes, one for showing and one for helper.
I personally will just pay for extra tickets on the day just in case.