Things that are obvious don't need to be talked about. Things that are missing, do.
Say it with words. Show it with action.
Acting after being asked is compliance. Acting without being asked is kindness.
Do what's right and you'll never go wrong.
It's fine to wait for an appropriate time, but it's inappropriate to wait forever.
There are two ways to improve your service, and yourself: maximize your strengths and minimize your weaknesses.