They have, twice that I know of -- once after Chappaquiddick. I remember seeing him get into the back seat of someone's VW Bug after church. My parents were Catholic and we used to attend the same church, summers although they usually went to later services for obvious reasons... Ted was lean then, but he is still a big guy, he's a bad fit in a VW back seat.
The women of the family were worse drunks than the men. Ted's wife Joan was a terrible alcoholic. Eunice Shriver was worse.
I have a degree of sympathy. I have alcoholics in my family, too. It tends to run in families (genetic predisposition?) I don't know, but I'm very leery of booze.
d.o.l.
Criminal Number 18F