Because traffic control is real. Crew need to be alerted that you're arriving and which pad to prepare. They're not standing around, looking out windows, waiting for master to come home. They're employees with jobs to do. Even that guy sleeping on the bench, he's overworked already and on break.
And I'm not sure why you'd want a designated pad. I'd hate to have to run the length of a large pad when I'm in a small ship.
Because that stuff doesn't magically appear out of thin air. You have to pay for it as the owner! The weekly costs are for employees and overhead, not supplies.
Safety officers, you insane maniac. They don't want to have to clean your guts off the wall AGAIN.
You can. But I agree, the game should just kill you if you refuse to do so. And then keep the blood stain decals from the last time you wanted to show how much of an individual you were. Or maybe it takes the Fleet Carrier away, because that CMDR is now dead, and you're playing a clone.
There's no drinking mechanics. Wait until the next DLC, Elite Dangerous: Valhalla.