If you're referring to him acting as her escort, then no he does no have to be a Catholic, but if you are talking about the 'giving away of the bride' then no need to worry because Catholics don't do this in their weddings because the Bride should be freely giving herself to the Groom.
In a Catholic Church.
No. A non-practising catholic is a catholic that does not attend worship. Protestants are christians who reject the pope as head of the worldwide christian movement.
No, a Catholic wedding is a sacrament and, by canon law, must be celebrated in a Church that has been consecrated by a Catholic Bishop.
St Vincent Catholic Church
Only if one party is Catholic.
Yes
Yes, as long as she does not choose a Catholic Church. She will have to find a church that will perform an interdenominational wedding of divorced persons. The Catholic Church will not.
Assuming no divorce has taken place, which would require an annulment, yes, if you have changed from Orthodox to Catholic it would be possible to renew your wedding vows in a Catholic Church. There would be no need for a full blown wedding, however, as the Catholic Church does accept the sacraments of the Orthodox Church as valid.
Yes, not only must they take a class, but the Catholic must receive special permission (which is not always given) from the Bishop to have a wedding outside of a Catholic Church. Even if it is outside a Catholic Church, the wedding must still be witnessed by a Catholic priest (deacon, or bishop) or it is not valid.
Only Catholic weddings may be performed in a Catholic Church without special permission from the Bishop of that diocese.
The Catholic wedding vows have never included the promise to obey. This addition to the wedding vows was added to the ceremony by King Henry 8 when he separated England from the Catholic Church and declared himself head of the Church of England. In the Catholic vows, both parties promise "to love and to cherish."
Well, since the Catholic Church is not involved in the wedding, one would best address this question to a minister in the Church of England. The Catholic Stance on this wedding is that the divorced Catholic would be committing adultery as the Sacrament of Marriage is a commitment until death. See the link below for more of a detailed explanation.