Last month, Square Enix announced their first Active Adventurer Appreciation Campaign as part of their ongoing celebration of Final Fantasy XI's eleventh anniversary. On December 10th, the codes to redeem your prize from a broad range of prizes will be delivered to the e-mail associated with your account, so be sure to keep an eye out for it!

Let us know what you think of this campaign announcement over on the ZAM forums!

From Playonline.com:

In commemoration of FINAL FANTASY XI's eleventh anniversary, players with an active FINAL FANTASY XI account will receive a special in-game item!

Campaign Summary

Players with an active FINAL FANTASY XI account during the period below will be eligible to receive a special in-game item.

Campaign Eligibility

Players who have an active FINAL FANTASY XI account at any point between Tuesday, October 1, 2013 and Saturday, November 30, 2013 are eligible. Players starting their adventure for the first time and players who reactivate their service accounts during this period are also eligible for this campaign.

Regarding the Special In-Game Item

Eligible players will be sent a campaign code to the email address registered to their Square Enix Account on Wednesday, December 10, 2013.

Click here for instructions on how to redeem the campaign code. After redeeming the campaign code, players will be eligible to receive one item of their choosing from the list below. Details on how to obtain the item of your choosing will be included in the email with the campaign code.
* We cannot resend any codes, so please make sure you are able to access email sent to the address we have on file. In the event you wish to change your address, you may do so until midnight on December 9, 2013. Please refer to this page to learn more about how to change email addresses.

Ridill / Joyeuse / Byakko's Haidate / Genbu's Shield / Seiryu's Kote / Suzaku's Sune-Ate / Hauteclaire / Hofud / Valkyrie's Fork / Algol / Seveneyes / Nightfall / Nocturnus Mail / Nocturnus Helm / Undecennial Ring

50,000 Conquest Points / 50,000 Imperial Standing / 50,000 Allied Notes / 50,000 Bayld / 50,000 Guild Points

50 Beastmen's Seals / 50 Kindred's Seals / 50 Kindred's Crests / 50 High Kindred's Crests / 50 Sacred Kindred's Crests

3 copies of Rem's Tale, Chapter 1 / 3 copies of Rem's Tale, Chapter 2 / 3 copies of Rem's Tale, Chapter 3 / 3 copies of Rem's Tale, Chapter 4 / 3 copies of Rem's Tale, Chapter 5

Please note that dates and times, as well as the items that you can redeem, are subject to change.