If you still want explanations I'll give it a try.
5a - of feet - anagram - TOFFEE
2d - american ( US ) into HIS - juggle letters - SUSHI
5a - Higher on dart board than single 20 - TREBLE - which is also a kind of bet
7d - I think an epicure is a person who likes the good life - good food etc. bishop ( B ) 65 - VIV ( roman 6 and 5 ) admits ( lets in ) ON and then insect - ANT -- B ON, VI V ANT
Bon Vivant is French for someone who lives a good life - A GOOD LIVER - a bon vivant
Hope this helps you with your future cryptic crosswording
good luck
GoGo the Clown