its not exactly cheap...
"Entry into The Event – Entry for those aged 0-12 years of age is free.
All spectators and riders will have to pay the entry fee which will be available online on Sunday the 1st of October 2017 at 09:00.
Early Bird Discount for those booking between October 1st and December 31st 2017: For those arriving on Thursday (15:00 onwards), Friday or Saturday (before 23:00) the online, in advance entry fee is £30.00 per person aged 13 years of age or older.
For those booking between January 1st and June 13th 2018: For those arriving on Thursday (15:00 onwards), Friday or Saturday (before 23:00) the online, in advance entry fee is £35.00 per person aged 13 years of age or older.
For those paying on the door on and arriving on Thursday (15:00 onwards), Friday or Saturday (before 23:00) the entry fee is £40.00 per person aged 13 years of age or older.
For those arriving on Sunday the online, in advance entry fee is £10.00 per person aged 13 years of age or older. For those paying on the door the entry fee is £15.00 per person aged 13 years of age or older"