Midnight Season 1 is upon us, but before you go charging into your Delves make sure you do this first!
In the Delver’s Headquarters in Silvermoon City (/way 52.7, 77.9) speak to Naleidea Rivergleam. This vendor offers the item, 
Delver’s Starter Kit, which is totally free.
Upon opening this item, you will receive two 
Restored Coffer Keys, which currently do not appear to contribute to your weekly maximum.
At the start of Season 1, you can only receive six Restored Coffer Keys per character, with the 
Coffer Key Shard limit set at 600.
While this is a nice little boost, there is a catch—you can only do this on one character per account.
Thanks to @Korimae_ on X for pointing this out!