Use the actual ceremony start time. Do not use an earlier time to avoid late-comers, which only forces punctual guests to wait longer for the ceremony to begin.
Married parents: Mr. and Mrs. Jonathan Smith or Jonathan and Jane Smith.
Divorced parents: Ms. Jane Doe and Mr. Jonathan Smith or Jane Doe and Jonathan Smith (mother's name first).
If you have a different parent situation, like listing grandparents in lieu of parent, deceased parent, step parent, etc. just leave a note explaining.
What address would you like RSVP cards mailed back to?
This is usually the couple's address, but can also be parents or wedding planner....whoever will be in charge of tracking RSVPs.
What address would you like printed on the back of your mailing envelopes? Typically the couple's address or parent's address, if they are listed on the invitations.