Here's a checklist you will find very helpful. It has prevented me from forgetting some very important items!
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I recommend bringing a project that you've already cut out. That way you won't have to wait in line to use the cutting station. I second the idea of bringing your own iron and small pad (I made one similar to the tv tray ironing pad, it has a lip that clamps onto the edge of my worktable at retreat, so my sewing station makes an L). Be aware that some locations are limited on power, so too many irons can be a problem.