Just came back from POR last week, and yes there was shampoo. I was glad there was because I forgot to bring my own. However, I would prefer my own, their shampoo didn't lather up very good.
I agree with Grinning Ghost. The shampoo does not lather up well and afterwards when you are attempting to comb your hair it feels like combing straw (not good with two young DD's). I take my own shampoo and conditioner. Sometimes I take just enough so that I can throw away the empty bottles when we leave. This way we have more room for souveniers (sp) in our luggage on the way home - this was a tip I read on these boards.