The answers I have read have said that the problem isn't the piercing but the after care. They have said that it can take up a year or more to heal and sleeping and long hair can be a big problem. Some have suggested just to have two piercings and no bar because that was what caused all the problems.
Industrial for sure. Tongue piercings dont hurt that much at all.
Rinse and clean the piercing twice daily with special clearer for piercings and clean the piercing at least once a day with a salt water mixture. This won't guarantee that your industrial won't get infected, but it will definitely help.
Some times.
At a piercing parlor. Getting it done by a professional is best.
You can be any age as long as you have your parent's permission and they are present at the time that you are getting the piercing.
The major risks of an industrial piercing include ear deformation, migration and even rejection. If it is not properly taken care of it can move, and be very painful. Someone very experienced should preform this piercing, as if it is not done properly, the risk grows higher.
Getting and industrial piercing is a very invasive procedure and can tax your system quite a bit. Standard policy in professional body piercing studios is to provide no more that 3 piercings to one person in one sitting for safety reasons. So I would recommend you get your industrial done in one sitting and get the lobes done a few days later just to be on the safe side.
Yes there is some pain in getting your ears pierced however it is momentary and minor considering what you are getting done. I would recommend getting you piercing done at a body piercing studio and not some piercing gun place in the mall. In the hands for a professional body piercer the whole experience is much easier to deal with and you are being handled by a professional who knows what they are doing.
getting an ear piercing has nothing to do with a knee surgery so you should be fine.
Contact your local professional body piercing studios, they will advise you of the age limits and parental requirements for you area. They will also provide you with piercing prices for the piercings you are interested in.
I would wait at least 2 weeks just to be sure your body is healing the piercing OK before you start subjecting the piercings to chemicals.
If you got the piercing done at a professional body piercing studio there is no reason to remove it and removing it after just getting the piercing done would be the number one worst move to make. You should (if you choose to remove the jewellery) wait at least 24 ~ 48 hours after the piercing has been done, this way you wont bleed to badly. Now if the piercing was done by a hack and not at a professional studio, then I would consider getting a tetnus shot from the doctor and remove the jewellery in 24 ~ 48 hours.