What you get are the following:
Friendship Circlet - Increase experience earned by 20% when Lvl 25 and below
99 Aetheryte Tickets - Cheaper to move around the world
10 Silver Chocobo Feather - Used to trade for gear up to lvl 60
Fist Bump Emote

How to use code?
Step 1: Visit Mog Station (http://sqex.to/Msp)
Step 2: Register a Square-Enix Account
Step 3: Login and click on "Enter Recruitment Code"
Step 4: Enter code and follow directions

Code: PAJ8WCSS

Recruitment code must be entered before purchase of subscription.