Boarding point is just in front of Don Quijote at Dotonbori. If you are facing Glico Man, it’s on the left along the river.
Look for the Ticket counter (yellow booth) next to entrance at Don Quijote. The cruise departs about every 10 mins and a loop is about 20 mins, ¥900 per adult. It’ll bring you back to the same spot you board.
The cruise is just a loop along the Dotonbori River where the guide explained briefly about the surrounding sights and the various bridges along this stretch.
The cruise then paused for a little at the Glico Man billboard on the way back so we can take photos. But because we are not allowed to stand on the boat, if you were seated on the opposite side, you wouldn’t be able to get a good picture unless you are really flexible and can twist your body around.
I am of the view that it’s not worth the price I paid. The English commentary is limited (largely due to language I feel) and one can easily walk along the River Walk to see all these bridges, it’s not like you can only see it from the boat. In fact walking properly gives you a clearer view of the bridges especially if you are taking pictures.