Of course children participate in the celebration of Rosh Hashanah! Rosh Hashanah is a celebratory holiday and like most other Jewish holidays, incorporates family gatherings. Children also attend synagogue, often in special child programs and running in and out of the prayer sanctuary.
Plus, who doesn't like eating apples dipped in honey?
Some certainly only celebrate Rosh Hashanah because they feel guilty otherwise, but most Jews choose to celebrate Rosh Hashanah because they want to engage with their history and traditions.
partying
Reform Jews outside Israel generally celebrate Rosh Hashanah for only one day, while all other Jews celebrate Rosh Hashanah for two days. Reform Jews blow the Shofar on Rosh Hashanah even if it falls on Shabbat (the Sabbath), while others refrain from blowing the shofar on Shabbat.
Absolutely!
Jewish New Year
Anywhere and everywhere Jews live.
Rosh Hashanah.
they meet as a group to pray
Rosh Hashana is the only Jewish holiday that is two days long both in and out of Israel. See the question "why does rosh hashanah last for two days"
Rosh Hashanah celebrates the New Year, the anniversary of the date that God created Adam and Eve.
Rosh Hashanah 2008 begins on sunset of Monday evening, September 29. Orthodox Jews celebrate 2 days of Rosh Hashanah, Reform Jews celebrate 1.
Rosh Hashanah was on October 3rd in 1959.