We applied for 2 out of 3 on March 2nd, and the third on March 9th. However, we got confirmation for all 3 on April 17th (1 in the morning, 2 in the afternoon). Then we had them fill out the CBP once they got home from work. My sister in law, who filled it out the earliest (April 17th) still hasn't heard back. The other 2 didn't submit their authorization until really late that night (April 17th) and yet they both got their authorization for travel approved the very next morning on April 18th. So at this point, we are just waiting on my sister-in law.