Shabbat morning is customary, because the Torah is read at that time, and because more people come to the synagogue.
Yes!
yes it is. it happens on the night of their birthday, 13 for boys and 12 for girls. this is based on some research.
Bar mitzvahs are held at synagogues.
Yes.
Yes people still held bar mitzvahs in the ghetto but they were very small and secretive so they wouldn't get caught.
Absolutely! Bar Mitzvahs are FAMILY events.
No
Everywhere
The majority of bar mitzvot (pl) are celebrated in synagogues.
They're celebrated with parties after the ceremony.
Yes; bat mitzvah is for girls.
Girls have Bat Mitzvahs.
This is when the boy takes on the religious responsibilities of an adult.