A few things : always opt for a hotel , any male that offers you a place to stay probably isn't someone you want to waste your night in the town with. A girl offering a place isn't a sure thing of banging her as your dumb friends with you will have the same idea, and she'll probably have a fat roomate that had to be up early. Putting in for a hotel then staying at a girls place isn't exactly a waste of money.
Steal everything you can.
Instead of making 2000 shirts of your band that not many people will buy , make some bootleg shirts of bands in the same genre that people like/ will buy. easy money.
Brothels>groupies
Don't buy drugs from someone you just met. It will probably be a rip off. Would be rude to pass up free shit though
Treat it like a vacation. If you're good being late cause you were doing shit wont matter, if you're bad you won't get asked back anyway may as well have fun.