Network Rail said it does "everything we can" to make moving around its train stations as easy and safe as possible, but there are still far too many people injuring themselves where alcohol appears to have been a factor.
Robin Gisby, Network Rail’s managing director for network operations, said: “We want people to enjoy their evenings and get home safe".
"The only thing I want to see fall is the number of incidents, so hopefully the campaign will be a gentle reminder for people to take extra care as they travel home through our stations.”
More top news
The man, who was in his 30s, has not been identified, while several other people are believed to have suffered serious injuries.
The Olympian was one of several sports stars who opened up to the prince during an event for his mental health charity Heads Together.
There will be sunny spells, with temperatures peaking at 23 Celsius (73F). However, Northern Ireland will experience frequent showers.