Yes, Floreal Blankenberge is close to Zeebrugge.
By car, it takes about 9 minutes.
By coastal tram (stop Blankenberge Duinse Polders, a 13-minute walk from the hotel), it’s 3 stops to Zeebrugge Strandwijk, followed by a 15-minute walk to the festival.
By bike or Hoppy electric scooter (located near the Sea Life Center just before the hotel), you can reach the festival within 20 minutes.