5. It's likely that you won't need to be intubated, as it's an arthroscopic procedure, but it's still a surgical operation and intubation is always a possibility. If there is a need to intubate you, you will be intubated.
6. Oh, you answered my question. You will be intubated, because you will be in general anesthesia. Usually, you are given a sedative first to relax you, you might feel cold first and nervous because of the procedure to come and the cold temperature in the operating theatre. After induction (an injection of an anesthetic, usually propofol, which causes you to lose consciousness) you really won't feel a thing. Then, you are maintained in anesthesia with inhaled anesthetics. Finally, as you wake up, you will be given analgesics for pain (usually opioids such as tramadol) which are very powerful to reduce any pain. You may feel disoriented, nauseous and weak. But this is usually transitory; recuperation is quick in these procedures.
I hope my answer is satisfactory.