When do you get your code for FP's?

[jump00]

Happy Easter!!! I booked our upcoming WDW vacation online through WestJet - first time without using a TA. Question:
I want to create an account with My Disney Experience. When will WestJet send me my voucher/code so I can book the Fastpasses 60 days in advance? I added tickets to my trip - we got a good deal with all the promotions going on. (I did ask a WJ agent but she didn't know the answer.

Thanks for any advice/tips. We haven't done Disney in quite a few years so I'm new to MDE and a little nervous.

Jump00