Correcting Master?

Ok so I've been reading fet again and came across a discussion on correcting one's master. Specifically the question was how one goes about it and some examples were given which I will quote.

examples: You are at a dinner Party at your Master's Bosses house and he invites your master to play golf the next sunday. You how ever know that he has plans for that sunday. Maybe he promised something special with you, maybe he promised to help his parents with something, or your parents, maybe you have kids and that sunday is your son's soccer game, or your daughters school play of peter pan. And the boss isn't asking your Master to work..just to play golf. Do you speak up then and save your master and who ever else some trouble? Or do you stay silent.

Lets say that there is a food or drink that your Master is not supposed to have because it makes them sick or they get a little too drunk. if you see them about to eat a peice of cake and they reacently found out they are diabetic.. would you tell them to put the cake down? if you know they can only handle two glasses of whiskey and they are about to pour a third, how do you stop them?

another example is normally your Master is a pg 13 rating language type guy. Doesn't curse that much...unless a football game is on, then he screams vulgarity that could make the devil wince. And your grandmother is over for dinner....or the kids are in the room. How do you stop that?

I noticed a lot of people chose to reply along the vein of "My master doesn't forget obligations, drink to excess, curse in front of grandma/children so it's a moot point"  Some went the route of I'm not his keeper and whatever he wants to do is his damned business. Still others pointed out that they would gently point out possibly forgotten appointments, food restrictions, and sensitive ears in a subtle way privately. 

Now I had to laugh when I saw this list b/c I do have a master who doesn't keep up with his social calendar, who decides on the fly to eat or drink things that aren't strictly within the realm of good for him and who has no qualms about cursing in front of anyone grandmas and children alike. 

I don't have any one way of handling all or even any of these situations. It depends on what is appropriate for the entire time and place. I may mention that we had plans or I may not. As far as telling him what to eat it's not something I do. I certainly don't tell him to "put the cake down"  nor do I stop him from drinking. If he's drinking and we aren't at home I ask if he'll be wanting me to drive. When it comes to him using profanity in his own house I don't dream of chiding him, he's in his own house. When we are in public sometimes I will admit to flinching but he's already told me that if people are so highly offended by profanity in public then they shouldn't be in public, so that's that. Not my job to monitor him or make him adhere to social standards that he's not invested in. 

He doesn't have a list of rules telling me when this happens do that... He prefers that flexibility be maintained and that if I fall back on anything it's what's appropriate and what he would have me do which is different from what he would do in a given situation. I think he prefers to keep me aware of the fluidity of events even when they look identical at first glance. Scratch the surface and you'll see differences that though small are vital to deciding how to proceed in each instance. With ironclad rules the danger of getting so wrapped up in the letter of the law that the spirit is set aside or forgotten is dangerously close, particularly for someone like me who finds comfort in structure.  Not sure how I got from correction to structure but no one even said my brain worked in straight paths.