To encourage mingling
Host a party
To encourage mingling
put out less chairs than there are people. People can not mingle if they are sitting.
Choose a theme
Spread the word
Do Your Homework
To encourage mingling
Plan more games and activities than you anticipate playing
Set the mood
Enlist help
Divide Labor
Give yourself plenty of time
Pick a place
Warnings
Play background music to liven up the atmosphere More ...
Test your English Language 
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