On Saturday and Sunday, NMBS will run 26 extra trains per day to Ostend and Blankenberge. This involves thirteen outward and thirteen return journeys. “Additional staff will be deployed at the stations to manage passenger flows on the platforms,” it said.
The NMBS advises travelers to consult its travel planner before departure, which also indicates the expected crowds. She advises avoiding the busiest times of the day if possible: arriving at the coast between 11 a.m. and 2 p.m. and departure between 5 p.m. and 8 p.m.