Bachelor Party VS Bachelorette Party ?

 What is the difference between a "Bachelor Party" and "Bachelorette Party"?

Bachelor Party : is for the groom to celebrate his last days of freedom with his friends.

Bachelorette Party : is for the bride to celebrate with her closest friends for her last days of being a single woman.

SOMETIME / SOMETIMES / SOME TIME

Sometime : at an undecided time in the future or past
     - Hey Nick, Why don't you come over and have dinner with my family sometime?

Sometimes : not always or not often
     - We usually played soccer at school, but sometimes we played tennis.

Some time : a period of time
     - You must give your wife some time to think about what she did wrong at the church today.