Party host - I would hope that you would not think your party is a war. That doesn't sound like a fun theme.

I could care less who you like and who you don't like. If I received an invitation, I am going to have a good time.   I expect that if you invited me, you would want me to enjoy myself.

You make the decisions and you deal with what happens. When you open the doors, the image you create will determine how many people enjoy it. Perhaps you only want a party for a handful of friends. That is your call to make.   You might have an open house that you hpe will attract a wide and diverse group of attendees.   Hopefully your goal is to let your guests have a good time.

Hopefully it will be a party that most people will enjoy and hope to come back for the next one.