Yep ... that’s how it is at Lincoln National Cemetery near Chicago.
They rules are VERY strict about what you can place on the graves.
Over the holidays they allow a grave blanket.
It’s stated very clearly that once things look worn they will be disposed of...
Both my folks are buried there in the same grave..
Until my husband died, I didn’t know that being buried together was an option. The best deal one gets from the gov.