I like the idea of only having to remember one password to everything Apple related. But what happens if I change my iCloud password? Will it get synchronized automatically or will I need update it manually on my Mac, e.g. by re-enabling usage of a local password and then switch back to iCloud? If not, it would require my Mac to have an Internet connection when booting up so that it's able to synchronize the password to reflect that of my iCloud, right? Is there anything else I need to be aware of before turning this feature on?