I called the day after the lottery. I actually already knew I'd gotten in because someone i knew was in the room when the lottery occurred, and she called me afterward. But I wanted to make sure it was official.
The lady who answered the phone actually got really excited because I was the first person who called that actually got in. I pretended to be surprised.

She said she'd gotten a lot of calls, and she didn't seem particularly upset or annoyed. They're used to it.
Good luck to everyone. We're in kindergarten at ATS and it's just a terrific program.