My FIL has just brought my 16 m.o. DD back. He says that he has drunk two beers and then driven her home. DD has not napped enough, probably just a fifteen minute car ride to where they were going and looks poorly. FIL says that they have been at a relatives Christmas party for pretty much the whole day; 10am-4pm.
We rarely drink, and certainly not when driving. FIL and MIL are bid drinkers and prone to lying about how much they have drunk. AIBU to think that this is not acceptable.