Hi Liz
Try the Moli in Tivenys. They use a modern press but it is cold press. If you pick and press on the same day you get better quality oil. The quality is dependant on the residual acidity in the olives. Less than .1% produces Extra Virgin 1. Virgin  over about 3 it becomes industrial (I think, if I have remembered the figures correctly).

Intersting site to check out is http://www.geocities.com/~gianno/angi2.html#Planting . All about olives this page is planting but much more.

So no need to do the shower thing unless you use olive oil for tanning lotion.

Cold, First press Extra Virgin Oilive Oil. Every time !

Lyn