If you must roll a window down for fresh air, be alert. If you see someone approaching your car, immediately roll up the window. Have it handy in case you're asked. Reconfirm your flight directly with the airline 24 to 48 hours prior to departure. Keep your carry-on baggage to a minimum.
Most airlines allow two carry-on bags.
Heavy passenger volume during holidays or peak travel days may limit overhead bin and underseat storage capacity. Use luggage tags to clearly identify your bags. Use only your surname, first initial and business address and phone number. Don't pack valuables in checked luggage. Always carry valuables along with some overnight necessities in a carry-on bag.