I wouldn't take adderall a night before you're going to do MDMA man, that's stupid. Unless you have a large tolerance you're most likely not going to sleep well. I think you should solely drink alcohol the 2nd night and get a good night sleep to be well rested for the MDMA and the event. You can do the coke If you want also man. Cocaine releases dopamine which replenishes veeerrrryyy fast and doesn't release serotonin, so no cross tolerance. You'll be fully recovered from the cocaine in a few hours. If I was going to roll twice in a weekend, though, I would roll the first night, drink the second, and roll the third.