I'm pretty sure the OP has omitted the word "grandson" otherwise the rest of it doesn't make sense. She would say "he goes with my husband fishing etc".
Anyway, my parents always allowed me small amounts of alcohol from the age of around 10. This was the 60's and there was rarely alcohol in the house and going out for a meal was almost unheard of. But if I asked for a little bit of advocaat or a sip of mum's cherry brandy at Christmas I was not denied it. Likewise I was allowed a glass of wine with Christmas dinner and any other occasions it may have been on offer.
They had lived in Italy and their attitude, in my opinion, was quite healthy. I didn't want to sit around the war memorial drinking strong cider with the other village kids when I turned 16. It wasn't a novelty and seemed very uncouth.
I like a drink, it is fair to say, and I have a glass of wine in the evening 2 or 3 times a week and I also like a cocktail or two if I go out for a meal but since being widowed that is a rarity.