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.
United Airlines further complicates this issue by adding luggage to the equation. If you're not checking luggage, the carrier advises you to arrive at the airport at least 60 minutes before your scheduled departure time. If you're checking luggage, it's 90 minutes. For international flights, give yourself two hours, says United.