Paris waiters never see me

Art has taken his son this week to the French Open tennis championships of Roland Garros.
And the evening before visiting the matches Art and his son visit a nice French terrace, to have a few drinks.
Art has been in France many times and he has made preparations:
- he managed his son in an ironic way about the 'gentle politeness of the Parisiens',
- he warns about paying 8 Euro for a cappuccino on some terraces
- he explains the diverse delicacies that for some other countries might appear a bit strange, like the tail of a pig etc.
- he explains that you should make sure not to end up in French procedures, police issues and formal requests

Still, Paris has many beautiful places and Art loves to spend his time there.
And Roland Garros is a great opportunity to combine it with watching some nice tennis.

When going to the cafe Art took a special wooden sign with him.
After sitting on the terrace for 10 minutes and not being able to attract the attention of the waiter, Art Burshy raises his wooden sign with in capital letters '2 BIERES' and in smaller letters below 'S.V.P.' as you always need to remain polite.

His son looks puzzled and asks him why he brought the sign.
Art explains him that he just has this experience where waiters do not seem to see him.
This happens everywhere, but Art has somehow experienced this more often in Paris.

Art starts explaining about the type of waiters he knows:
There is (a) the waiter that - just when you drink the last part from your glass of wine - stand next to you and offer you to top it up.
And there is (b) the waiter where you are lucky if - after raising your hand for half an hour - they finally see you and after a sigh finally with a sour face ask if they can get you something.

And now his sons attention has been raised Art sees this as an opportunity to explain that this is not unique to waiters; it happens everywhere, but with waiters it becomes clear quite quickly.

Art explains that in many companies there are:

a. the motivated enthusiastic team workers
They are almost always joyful, try to make sure the customer gets serves first, feels accountable for the whole company's performance, is not afraid to do tasks that fall outside his job description and wants to learn more and more. Their focus seems to be more on giving, and having confidence that in the end life will treat them well for it.

b the 'you-should-be-happy-I-work-here' employees with a focus on entitlement
These generally leave no chance unused to check if they are really getting what they deserve; they actually feel they exceed every quality standard and are so exceptional that they deserve to be exceptionally rewarded. If things do not go well they can very well explain that this is the fault of others. And if they do not get what they think they are entitled to, they often start showing diva behaviour.

His son nods. Although it is not clear whether he does it to confirm his understanding, or just to avoid making the conversation on this topic even longer.
Then the waiter actually comes and asks what they want.
"Well, 2 beers I would say..." Art says while pointing at the sign.
"Sure" says the waiter "but 'bieres' is misspelled, it should be with an accent grave on the first 'e' ".
Art does not react, he then orders the beers and also a coke for his son.

And when the waiter has just left to get their drinks, his son says
"well dad, why don't you explain your vision to this waiter..."
Art says "sorry son, what I have learnt in all these years is...never to argue with a Parisian when you still need him".