I'm encountering an issue with how to address invitations when there are multiple adults with different last names and living at the same address.
My FH's grandparents, great-grandmother (his grandmother's mother), and aunt (divorced but kept her married name) all live in the same house. Most of the things I've read suggest using different lines for different names, but I'm using Minted.com for my invitations and the template I picked (which I otherwise completely love: https://www.minted.com/product/all-in-one-wedding-invitations/MIN-06K-AIO/garden-lights?color=A&greeting=&shape=) doesn't let you put names on multiple lines.
I'm less concerned with formality as I am with making sure that everyone in the house knows that they're invited. All four names (I.e. Joe & Pam Smith, Sally Williams, and Jane Johnson) don't fit on one line. I worry that if I pick one last name, like "The Smith Family, " it won't make it very clear that all four of them are invited. Would "John & Pam Smith & Family" be clear enough? Is it weird to say "The Smith Household?" Another option is to send multiple invitations to the same house, but that seems really wasteful. Any suggestions?