Over 23,000 tickets have now been sold for the visit of Millwall to The Valley on Saturday (KO 12.30pm BST).
It will be the highest attended fixture between the two sides in more than 50 years.
Supporters are advised to arrive early on Saturday to avoid queues at the turnstiles. With a 12.30pm kick-off, the Fan Zone, Meantime Fans’ Bar and Bartram’s will all be open from 10am, and will close earlier than normal to allow supporters time to get to their seats.
This weekend's game will also mark the sixth successive league or play-off fixture at The Valley to draw over 20,000 supporters, following bumper attendances against Northampton Town, Burton Albion, Wycombe Wanderers, Watford and Leicester City.
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