What should I do when my grown grandchildren bring friends to see them and it creates a wedge between us? When the friends are present, my grandchildren make smart-alecky remarks, but they will act normal again when the friends leave.
This sounds like a frustrating situation.
If your grandchildren are still young adults, you might want to consult with their parents to hear their suggestions for how to approach your grandchildren.
If they are even older, I encourage you to talk with your grandchildren directly about your concerns involving their friends and also request that you spend time alone with your grandchildren, without their friends present.
You can let them know that you value your time with them so much that you would like to have their undivided attention.