I've been on several flights where the individual sitting in the exit row was of a size that seemed as if there would be difficulty actually getting through the exit door. I know that there are restrictions on who sits in exit rows. Do gate agents and/or FA's assess "size" when making these assignments?

Also, I was on cross country flight several years back when female exit row passenger, seated across aisle from me, got completely smashed on the flight. She was in bar before flight, but I don't know how much she drank there. I personally saw her purchase 4 beers during the flight. She was singing and taking clothes off near end of flight. Should there be limitation on alcohol consumption of exit row passengers?