I'm one of the few people leaving Cadiz tonight. People were streaming in from the train/bus station. Carnival is essentially a giant Halloween for adults and then some.
Everyone is in costume but each group has a theme where usually one person is the focal point and the rest support that person (ex: person dressed as an egg and 20 others dressed as penguins chasing him around). Also, each group seems to be prepared with chants, songs, and skits - so there's entertainment that spontaneously starts up all over the city. The more the day went on, the crazier it was getting and it was really entertaining by the time I left, so I imagine I'm going to miss some awesomeness. However, I'm tired and ready to head home. On the plus side, I refilled my prepaid sim card.