Here are a few dates that have been provided for events taking place in towns such as Jerez, Cadiz & El Puerto de Santa Maria etc.
Feria of Jerez 2014 will be 11 - 18 May
Jerez Moto Gp will be 2 - 4 May (This is generally subject to confirmation with the powers that be at MotoGP.)
Feria of El Puerto de Santa Maria is 21 - 26 May 2014
For Sanlucar specific festivals, visit: viewtopic.php?f=7&t=333
Any others dates/events, please let me know.
Ian