Whilst I have pretty much everything backed up where I can the only things that I have actually got 100% tried and tested recoverable is Hyper Backup (as it encrypts my B2 backup) and within that is my Vaultwarden backup. So even if my lab was destroyed tomorrow I could get to my B2 backup and recover the Vaultwarden backup and stand it up on any machine I could get access to.
I am not very good at the local backup thing but I do also have an unencrypted backup that is run less regularly that I could easily grab the Vaultwarden files from.
In addition to that the vault is accessible locally if it can't communicate with the server anyway.