Complex sentence: Both fares covered by the pass and reservation policies and fees vary greatly from country to country; in general, covered fares are higher and required reservations uncommon in the north, while fares are lower and extra fees more common in the south.
Split into simpler sentences: Both fares covered by the pass and reservation policies and fees vary greatly from country to country. In general, covered fares are higher and required reservations uncommon in the north, while fares are lower and extra fees more common in the south.