I just have them check for my wifi. If that’s what they’re connected to, then the nas is available. If not, then there’s no point trying to mount it. However, one day every month my nas pulls updates and shuts down afterwards, so that I need to boot it again when I get home from work. But my laptop boots just as fast as it normally does, even though it fails to connect to the nas.

Write a systemd service, that’s how my computers mount my nas. you just need to have it run under your user instead of root or point it towards the right keys manually.

Ignore them, as long as your firewall is set up properly.