This Event period is Ongoing until June 1, 2021 (Tue) 23:59, so make sure do not miss it out.
Redeem the following event coupon codes during the times listed below and to do so, head to (ESC) > Adventurer Support (F11) -> [Use Coupon]:
As you can see, there's always the [Event] David Finto's Request #? Item received with each Code.
Here is the function to use those items : Head to [Velia] NPC David Finto and hand over the materials shown below:
The quests can only be completed once per Family.
That's all about this guide, let me know if you have any question about Black Desert online, my Family name is Dustan from Turkey and MENA server.
Enjoy your time !