Season-ticket holders have until 9am on Monday to redeem up to three free tickets for Tuesday's game against Ipswich Town.
More than 22,500 tickets have already been sold for the game under the lights at The Valley.
Caretaker Manager, Johnnie Jackson, who encouraged fans to bring their family, their friends and their voices, said: "I can’t wait to see The Valley packed and rocking again. The Plymouth game was something special. We really enjoyed that, to see that support again, under the lights, I’m really excited for that."
Charlton Athletic season-ticket holders helped #FillTheValley for last weekend’s game against Plymouth Argyle, supporting Jackson’s side to a crucial three points.
Season-ticket holders can claim up to three free tickets via the club’s ticketing website by clicking here,
Click here for instructions on how to redeem your ticket online.