It took about 2 weeks for our planner to contact us after sending in the Letter of Agreement. So mid-January is a pretty good assumption. I think it all depends on how busy they are at the time. I was told it took so long because October was a busy time for weddings and our coordinator was attending them. However, I did call a week after I sent in the LOA and the coordinator has been assigned, so I got a sneak peak of who she was.
Happy Planning!!