For a certified copy of your marriage certificate, contact the vital records office in the state where you were married for instructions on how to request a copy and information on any fees. Even though the guidelines vary by state, all requests should include: Full names of both spouses at time of marriage.
Yes, you may check-in for your United Airlines (UA) flight at the airport ticket counter from 30 minutes to 3 hours before the scheduled departure time (depending on your departure city and destination) and receive a printed boarding pass.
You may also check your bags with a United ticket counter representative or curbside skycap (where available). You must check bags at least 30 minutes prior to scheduled departure in most domestic cities and 60 minutes for international destinations.