Advice request: how to buy a quarter barrel

I am in the exceptionally fortunate position of getting to marry the love of my life.

Even better? He also loves whiskey.

Because our first date was a whiskey tasting, we thought it'd be fun to give away bottles of whiskey as our wedding favors. And, each anniversary, instead of tasting some frozen cake, we would drink our barrel.

Our wedding won't be huge, and we'll probably only need between 50 and 75 bottles.

Does anyone have advice?