I bought full price tickets to the show last night, and when I waked in, I saw Chris, LotteryDude from Book of Mormon. He is over running Mean Girls for the first few weeks. Forgot to ask how many tickets they had for the in-person lotto, but he said they had gotten about 175 people each night for the first 2 shows.
I went and there was definitely a crowd there so I'd say 150-200 is accurate. They only had roughly 20 tickets to raffle off (~10 people if each claims 2 tix) and it was sold out.
I went to the in-person lottery for all 3 days so far and surprisingly won last night. I would say that number has been pretty consistent for the first 3 days - about 150+ people for 10 pairs of tickets. That said, the seats are amazing, first row center orchestra with a low stage. They say partial view, but they were probably the best seats I've probably ever had, especially from a lottery.
If you've been entering the online lotto, have you been receiving loser winner notifications? I noticed that I've been getting loser notifications for Frozen (also run by Lucky Seat) but not for Mean Girls. I don't remember getting an entry confirmation either. Now I'm wondering if my entry didn't go through because I'm not getting emails.