It had been on my list of places I wanted to experience but for some reason I haven't gone during my 9 months in Korea. However, that had now been changed and I am happy I finally went!
The cruise enables you to see 63 building, Namsan tower (although you only see it between buildings but still), countless of bridges who all have their own individual history behind them, floating islands, and the Banpo bridge fountain show.
I have always had the idea that mainly couples go on this but there was a nice mix of people on the boat when I was there. There were families, groups of friends, office workers, tourists, and of course couples althoug outnumbered ^^
So you always have more than one reason to keep on going on the ferry! ;)