#4 baby gender reveal

We are planning to have a gender reveal gathering. This is baby #4 for me and baby #2 with my fiancé. My first 2 are from a previous marriage.  Maybe it's my age (32) or that it's my 4th baby, but I'm having doubts if I should invite friends or just family to our gender reveal.   Do you think people would wonder why we're inviting them or having the party in the first place?