as far as i know events in the club only trigger at noon. The fact that you used a cheat code should not be a problem. I suggest you go to the club at noon and try your luck.
With Rachel can talk in the noon near the temple she will stand to the left of the entrance and you can talk to her and then just pump her up to 2 level, and you will need to talk to someone, well from the quests you will be written, and so I do not remember what to do, good luck in passing the game!