League of Legends (LoL) Question: The rewards for events

Hi I just wanted to ask a question about claiming the rewards but didn't know the proper way to ask so decided to do it here :)
This question is with no hate but I was just curious on how to claim and get your reward if you win the giveaway and how long does it usually take.
In the email I got it did state that it will take longer than usually and that is perfectly fine! I was just curious to know how long because I am planning to use it as a birthday gift for someone.
Also, I am worried it might be sent to my other account on EUW because I used to have it on my MobaFire profile but now I switched.
To anyone who can answer some of my questions thank you so much!