Party is for meeting new people

Talking to JJ about whom to invite for his upcoming b-day birthday. he mentioned his violin teacher, Ms Karin. Mummy and Daddy thought it would be best to invite kids only because it's a kid's b-day party. To which JJ replied - She can meet new people at parties, right? JJ - Yes, you are right. Thank you for understanding one of the key premises of having a good party! Good job, you future partier!