Thank you both for your replies, very helpful.
I have looked at their website and their Facebook page but it's always nice to hear from people's personal experiences as well.
I think I'll take a thin jacket as you mention some of the evening activity is outside. I will take my own hat as being a rider it's always nicer to wear your own than borrow one when you're used to your own, but good to know the have spares should the worst happen and luggage is delayed which will have my hat it.
I'm already really looking forward to it, I can't wait as it's something I have wanted to do for years and so glad Just You do this as with the 'riding' companies you have to sort all the parts out yourself such as flights and transfers which is what has always put me off, it's ok to do that for Europe but not for USA.
Donna