I know it isn't the same, I'm saying when I first got the quest, I had the option to gift the bottle. As in, Visit Rama at his home (optional) gift a bottle of Divinity Reserve. However, I wasn't able to buy the alcohol because it wasn't showing up in the store at that time, not on that character. I was able to purchase it on another character, who doesn't even have the quest. I still am. Both of these characters are human so it's not a race issue.
My main character, whom I'm trying to do the quest on, cannot see the bottle, therefore, cannot buy it. This is before and after restarting the chapter and other chapters. In comparison to before, I can't see the bottle, but now I also don't have that (optional) part of the quest.