Ultimate family adventure on-board Symphony Of The Seas

Aerial view of Ultimate Abyss, the world's tallest slide at sea. Photos: Royal Caribbean International

Size does matter, and apparently, bigger is better when it comes to cruise ships.

Standing in the middle of the Royal Promenade on the Symphony of the Seas, the world’s largest cruise ship, I was amazed by its extraordinary width and length. It felt so stable – good news for those who suffer from seasickness – that you might not realise you’re actually on board a ship.