Only 100?
hahahahahahahahahahahahahahahahahahaha!
Talk to me after you've entered 10,000 codes!
I have at least two Everest rooms of everything except the organ. The dead men's boxes are cheap building blocks. The monkeys are fun around Halloween.
Everything else, keep a few for posterity, then sell it. 5 credits a piece adds up. It at least covers some of the 10 credits per ride for the Alic/Pan rides.
I usually enter 200 per night, trying for that ever elusive Sparrow suit for a friend.