Help with packing [part 2]

As you know I have problems with packing and always take far too much stuff. I'm doing one of those coach trips round California for 2 weeks and I've started packing already [not going for ages]. Has anyone done one of those holidays? I'm pretty sure that all I need to approach it as an activity holiday, not a dress up smart holiday but at the moment my bed is covered in clothes with me standing next to it with a puzzled look on my face. I'm hoping that hotel rooms over there provide tea/coffee making facilities etc.Will I be able to get decaffeinated coffee there? Any tips would be most welcome. Will I need insect repellant/ is eating out quite cheap etc etc. My brain is feeling quite frazzled.