As much as I'd like a Haunted Mansion clock. I'm not going to get you 100 codes on Yeti Vision.. It takes five minutes to get each code, since that's how long it takes the game to generate a new code. So if I were to play it every 5 minutes until I got you all 100 codes, I'd be playing yeti for 8.33 hours.
I don't think anyone has that kind of time... Maybe you should think about splitting the credits into smaller amounts. Like asking for 2000 or so at a time.