Many thanks for all of the comments left in the thread.
Just to make things very clear for everyone - as long as you log into both games during the given time frame (starting: 03/28/2013 - ending: 04/12/2013) you will qualify to receive your prizes.
For those worried about where to get their items once they have participated - all qualifying participants will receive an email complete with a code 5-7 days after 04/12/2013. This email is associated to the account you used during the promotion.
Log in during: (starting: 03/28/2013 - ending: 04/12/2013) and expect an email 5-7 days after 04/12/2013.
Once again, many thanks - see you in game!