Questions & Answers about Drumul la mare este mai scump vara.
Because drumul is the definite form of drum.
In Romanian, the definite article is usually attached to the end of the noun:
- drum = road / trip / way
- drumul = the road / the trip / the way
So drumul la mare means the trip to the seaside or the road to the sea, depending on context.
It can mean either, but in everyday Romanian this often refers to the trip/journey to the seaside.
A native English speaker might expect something very literal, but Romanian often uses la mare as a common expression meaning to the seaside or at the seaside.
So in this sentence, the most natural idea is probably:
- Going to the seaside is more expensive in summer or
- The trip to the seaside is more expensive in summer