wisdomfrombelow:
You can get disfellowshipped for marrying an unbeliever. And it is automatic if the unbeliever is a disfellowshipped witness.
This is unusual and has never happened in my country before to my knowledge. There were quite a number of cases of JW's here marrying outsiders and almost none that I know of got disfellowshipped. The only exceptions were a sister who married an outsider and had a wedding involving other religious rituals and another sister who slept with her "worldly" boyfriend and got pregnant before marrying him