They had plenty of alcohol at the last party (the one I wanted to go to!), but since this is a "family" picnic, I'm almost 100% positive that they will avoid booze.
Or at least, they won't pay for it if you want to have a drink.
I'm not a big drinker anyway, so I won't miss it. But it's so much better to go to an evening party where you can leave after a couple of hours because of the time, but a daytime event just lasts and lasts and lasts.....
Just thinking that the alcohol might dull the pain a bit.