Once outside the immediate flying field, it is helpful to have a map of the area. There are different types of maps, so you'll want to plan to get them before you leave for your trip abroad. Some maps will show only roads and rivers, others like geological survey maps will show elevations and may show some vegetation. You'll probably want one with accurate compass directions to say the least. If you can plan to go all out, and money is no object, you may supplement your maps with the latest satellite images.
Wind is the reason for the maps.
The prevailing wind of the day needs to be accounted for when aiming the rocket, and for predicting where the rocket will land. To make the most of the maps, you will need to know the direction of the wind. You will need a compass, and some device to indicate the direction of the wind. Such a device might be a wind sock, or weather vane. It is also nice to know the speed of the wind.