Misc: who's father owned the pizza bowl restaurant??

Questions

Joe Tex & Penny Maclean both had big hits referring to this dance, name it?

Joel Grey sings & dances with a gorilla girlfriend in this song?

Joel Songs: "If a vow is all it takes, haven't you paid for your mistakes"?

Joel Songs: "I'm not willing to lay down & die because I am-"?

Joel Songs: "Yes, we all need-" this?