I would be very disappointed if it does not exceed 25K. I don't think it will get to 30, but it should break the 25 mark, hundreds buy late and more on the day, including walk ups. I think TM have stalls around the grounds and around the main hotels. I think the build up locally is equal to previous years, LMFM even had a live broadcast from Oriel Park today for a few hours.
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