This question does not have a clear answer, if one is a worshipper of Satan (s)he could still do whatever they feel like to do, as most of the humans normally do. Another things is depending on the Church/culture you worship Satan in/with. For example Satanism described by Anton Szandor Lavey (Satanic church) is ment to be an ideology. Of course it has rules and holidays and certain ideas. But one can not clearly state how people perceive ideas and the written words, nor how they respond to it.
That is a belief of witchcraft. It is not a teaching of Christianity, nor is it true. There have been witches and satanists who were killed by demons while standing in a circle.
No, most Satanists are not hate groups. However, there are some sects that are.
No, not at all. they are not a satanic band and none of them are satanists. andy is an athiest, but he is not satanistic.
nope
NO.
No, they're not.
no.
The Devil.
No.
Yes.
No!
No.