Soldato
....when it wakes from sleep I cannot connect to my NAS, I have to reboot and it's accessible again in Finder/locations.
Is your NAS set to power down it's drives?
And do you have to reboot or can you reconnect to/mount the shares again using the 'Connect to Server'/CMD+K (from Desktop)?
Try disabling the powering down of the drives on the NAS (can appreciate you don't wanting to do that) and you can try adding the mounted shares (save share credentials to your keychain) to your 'Login Items' under Settings > Users & Groups > (Your Account) which should reconnect on log in.
Otherwise there's apps like AutoMounter (paid) or you can script something using AutoFS.