1st RULE: You do not talk about the Writing Cave. The Writing Cave is for writing. If you're talking - to other writers, to fans, to your cat - you aren't writing. Once you're in, you're in. Capisce?
2nd RULE: You DO NOT talk about the Writing Cave. You say you're a writer? Then write.
3rd RULE: If someone says "stop," goes limp, or taps out, Writing Cave time is over. While many of us spend hours of our "writing time" staring at the screen and that MF of a blinking cursor, at some point it's better to call it a day. And while in the Writing Cave - please - don't forget to eat. What? It happens. (Not to me, damn this ass to hell, but I know people. Trust me, it happens.)
4th RULE: Only one guy to a Writing Cave. Yes, I've met friends for "writing time" - at the coffee shop, the diner, one of our houses... what do we do? We talk. Talking does not equal writing.
5th RULE: One writing project at a time. Some people can break this rule... but probably not you or me.
6th RULE: No shirts, no shoes. Okay, I actually do wear a shirt. But no bra, dammit!
7th RULE: Writing will go on as long as it has to. Write til it's done, bitches. Can I get an amen?
8th RULE: If this is your first night in the Writing Cave, you HAVE to write. Yeah, that counts for "first morning" too. Write crap if you have to. Your first day of a new project - set a realistic goal and hit it. It sets the tone and gets the juices pumping.