Katie at España Profunda lists 10 Reasons NOT to go to Fallas. Here’s a snippet for the puritans at no.8:

8. Don’t go if you don’t like to drink and dance in the street. To me, this is one of the essences of Fallas, the verbenas: outdoor bars often accompanied by a stage with live music or a DJ and, if you’re lucky, a scantily clad young lady dancing up there and shaking her thang. This last bit has shocked many of my friends. All I can say to you is that the Spaniards are very open people when it comes to bodies.

… also evident if you stroll down any Mediterranean beach in July!