If it triggers you, ask them not to drink. If they really love you and know how much you struggle with alcohol, I'd hope they'd be willing to help out in any way they can...

Me, on the other hand - I can't get up the courage to ask my family to do something like that, but it's because they don't know I gave up drinking for that reason - they think I just quit due to med interactions and me not wanting to gain weight.