We had signed up our teenagers for a discovery diving course. The program sounded great, with lessons and pool practice in the morning and a real dive in the afternoon, and they were very exited.
Pick up from the hotel at 8h30. Upon arrival they waited around for one hour, during which they signed a paper. After that, they watched a short movie and took a quiz. Then nothing happened for 45 minutes. They went to try out gear then did 30 minutes of pool practice. Then nothing happened for at least another hour. After lunch we were taken to a dive site which was in the middle of a town. We entered the water from the quai, the water was extremely dirty and the visibility low. We arrived back at the hotel at 18h, feeling that we had wasted our day. The course could easily have fit in a half day, and I'm sure a nicer spot for the dive could have been found.