I too, am getting ready to head for our guild's annual retreat. I have one main project, all cut out, and many small ones. I always take way too many projects with. But, like someone else said, I may have an issue with one, or get bored and don't want to not have something to work on. Don't take anything that takes lots of brainwork. Way too much talking, laughing and drinking going on to take something that isn't an easy project.
We have a meeting before hand to see who is bringing what food items. Always need snacks. We have to bring our own bedding, it takes up lots of space, but needed.
Thread, can't have too much thread. I like to do thread painting things, so I always have a large selection of thread with me. My mind is spinning with ideas on what I have to pack. I better get my list out.
Don't forget your machine cord! One gal did that and had to go home for it.
It is always such a fun time, enjoy!