Possible Clues:

• Had too much to eat - and too much to drink, too, by the sound of it
• Sounds as if at least nine would have been too much for one, of course (7)
• Had too much, of course - and too much to drink, too, by the sound of it
• With at least nine, by the sound of it, one had too much of course
• Speed of bowling halving runs, so got stuffed
• Had thirds
• 'Got one's money's worth' at the smorgasbord
• Had too much on one's plate -- but managed to deal with it!
• Was greedy old judge touring outskirts of Venice?
• Excessively wolfed down eggs -- almost nine, by the sound of it