They can literally take about four hours composed of eating delicious French food, talking about just about anything: art, history, politics... I believe so, I don't speak French yet. But with the little knowledge I have, I believe that's what they talk about, OK.
So far I have only had two long dinners, and they both left me exhausted. At first I start off well and alert, trying to understand; picking out words here and there. Towards the end though, hmm, I'm so worn out. I guess my brain tries to process too much with all the conversations going on at once. French French French Francais Francais Francais, yes, too much. So I just sit there and eat. Best thing to do.
Speaking about food. There's an abundance on that too. So many different servings of almost everything. From the first dinner, I have learned to grab small portions so I can make it to dessert, which is always good cake. Spoons are used to eat cake by the way.
I don't have a picture of dinner, but here's a picture of the family pet Mayo :p