@Liam_Og That makes it even more ironic that they insist on drinking only mineral water; in my opinion this highlights the cultural aspect / tradition even more.
Maybe it is because tap water just does not go as well well with a glass of wine like a good mineral water, still or fizzy.
And they tend to drink mineral water the rest of the day as well and on the (more often than not) occasions where dinners are served without wine.
Not club soda, not sparkling water, and not ordinary bottled water. Mineral water.
I guess this is gonna be different here - like only having the option of tea to go with some meals.