To guard against delayed flights and temporary misdirection (or loss)of baggage by the airline, you must carry with you onto the plane a small overnight bag which contains your medicines and a simple change of clothes. Your travel documents, money and charge cards should, of course, stay with your person at all times.
Use durable but lightweight luggage. A 60 cm (24 inch) suitcase with wheels is best. The airlines allow only one piece of check-in luggage per ticket. Charges are levied on more pieces. Be sure the labels provided by the airline are clearly marked with your name and destination. Before the return trip, remove all previous labels so as not to confuse the ground crew.
Do not bring too much clothing. The people who go to Medjugorje dress very simply and modestly. Hand washed clothes will dry in the sun in a few hours. In an emergency, one may ask for the use of washers, dryers and ironing equipment.
There are laundry services in the village. The word for this is Čistionica.
Wear comfortable walking shoes.
Electric outlets are circular, recessed 3/4", and of the type that accepts two round prongs. Voltage is 220, as opposed to 110 in North America. Adapters are necessary for hair dryers, electric shavers and chargers - unless you have dual voltage. Your local hardware store should have small adapters as well as extension plugs.
Frizerski salon is the term for hair salon. There are several in Medjugorje. (You may borrow a hair dryer from your host.)
Pack a flashlight in case you want to be present at the night apparition to Ivan on the hill. (When in Medjugorje, check at the Information Office beside the church whether any night apparitions are expected.) Even in summer, the mountain air can be cool in the evening. If you have difficulty with that, take along a light jacket.
During the hot season, a bottle of mosquito repellent is useful, as is medication for disinfecting insect-bites. Against mosquitoes, your hosts may provide a very effective device which is plugged into the electric outlet before you go to bed. It is called "Aparat protiv komaraca." You can also buy it at the stores in Medjugorje. It is not expensive. Be advised, though, that the chemical it emits may be harmful to people with allergies.
A watch is essential, preferably with alarm capabilities. Small packages of paper tissue are handy too, as are plastic bottles for drinking water, and extra batteries for cameras, flashlights, recorders, radios, laptops and Iphones.
Do not place batteries of any kind in your check-in luggage. They are not permitted in the cargo-hold of airplanes.
Please bring a Misalette with the daily Mass readings, your Bible, rosary, a book for spiritual guidance, and pen and paper in case you have thoughts to jot down.