All Jews; at least those who maintain their tradition.
During Shabbat, the father typically plays a central role in leading the family in rituals and prayers. He may recite the Kiddush, a blessing over wine, to sanctify the Sabbath, and is often responsible for lighting the candles, alongside the mother. He also participates in the festive meals, sharing blessings and teachings, and may lead the family in singing traditional songs. Overall, his actions help create a spiritually enriching atmosphere that honors the significance of Shabbat.
They prepare their children for Shabbat and light the Shabbat candles.
"Shabbat Shalom!"
They're called Shabbat candles (Neirot Shabbat in Hebrew).
After Shabbat, there is the Havdalah service.
Shabbat Shabbatot
Shabbat comes from the Hebrew word for sit/rest. Shabbat is the day of rest.
Shabbat Shalom (שבת שלום).Note: This means 'A peaceful shabbat'. The phrase "happy shabbat" is not a phrase that is traditionally used.
Shabbat shalom is a Jewish greeting which we say during the day of Shabbat. See also:More about the Jewish Shabbat
There is no issue with swimming during Shabbat, however, you wouldn't be able to shower after swimming until Shabbat ends. (Assuming you wish to be Shabbat observant.)
Judaism.See also:More about Shabbat
They say Shabbat blessings for their children.