I would try and limit the beverages to water in something that doesn't spill, either bottled water, or cups with lids. If you wanted to give your friends a memento, maybe get different color insulated bottles. Having the iron in another area is a good idea. You have to walk, but it will make things less congested. Also sort out the power situation beforehand. Will everything be on one circuit? Do you have enough extension cords and surge suppressors? If you have a label maker, I would label each end of each power cord and extension cord so you don't accidently unplug something you don't want too.