Wow, you guys have some dissin' comebacks!!! (For those of you who dont understand, I meant they had good replies lol)
I think if I was worldly (which I was born into the Org), I would imagine I celebrated all holidays from birth, had no objections to blood transfusions, etc. I guess if I heard they didnt celebrate holidays, denied blood transfusions and shunned family members for wrongdoing.. that would freak me out. Sad thing is though, it was fed to me as a child and it made sense then!
The second question, I think, was asked to non jws, right? If so, I would say that every person going in should know they have a chance of being shunned for their mistakes, they may have to die for their beliefs and how much is expected of them (monthly field service, talks, etc.)