Once you have been taken in, you will go straight to your room. There are two main types of rooms: Regular and Seclusion (also known as the quiet room).
The regular rooms are much like college dorm rooms. The ward itself is similar to a prep school without the amenities.
The "quiet room" is where you are placed if you are deemed a threat to yourself or others, or if you are acting so impulsively that you're a distraction to the other patients. Usually it is a room with just a bed, a window on the front door, and mirrors mounted up high in the room so the staff can see you. However, I have been placed in a "quiet room" that I consider inhumane. It was eight feet wide by ten feet long with an extremely uncomfortable pad on the floor with no bed frame. It was extremely cold.
Privileges are usually extremely restricted for a day or two. How restrictive they are depend on what kind of shape you were in when you were admitted to the hospital. If you want to increase your privileges as quickly as possible—which will generally help with your recovery—to the best of your abilities do not act out. Instead, remember that, "you catch more flies with honey than with vinegar." That is, you are more influential when you are nice.
However, on the rare occasion, controlled anger is necessary. Don't feel guilty. If you don't advocate for yourself, who will?
Be patient. You do so much waiting around in the hospital that you have a good opportunity to learn patience. Look at this as an opportunity. Striking a balance is also important. Remember that patience is not passivity. You can be patient and still advocate for yourself.