Restocking the van after a successful show is a multi-step process, and the hardest part isn't moving pottery boxes around. It's paperwork.
You see, I try to keep as accurate an inventory of the van and home stock as possible, so if someone asks,
Do you have [whatever?], I can know without digging through all the boxes. A couple of times a year, this involves opening everything up and physically counting; the rest of the time, I'm moving marks from one piece of paper to another.
The first step is taking the sales book, which records every item and pattern sold, and transcribing it to a note pad, with all the bowls in one line, mugs in another, and so on. I also try to arrange the lines to correspond approximately to the columns on my inventory tally. That way the next step is easier: going through with a red pen and marking off everything that sold from the van tally sheet. On the pad, I'll also note which items I don't have more of in the shed--usually tall mugs or one-of-a-kinds, but in this case I sold out entirely on chickadee stew mugs. This makes it easy to open up my laptop and update the In Stock list I maintain
offcenter.biz. I'll correct and date it and try to post it no later than a day or two after the show.
After that, I take the pad into the shed with some empty boxes and start assembling what I need to fill the gaps: mugs, bowls, banks, dragons (I sold all six that went to Roseburg; fortunately, I had a dozen more at home). After a good Saturday Market I'll maybe have two boxes pulled; this time, I had four. I'll note on the pad which items are being replaced exactly (usually mugs, bowls and stews) and which are getting different patterns.

I back the van out of the carport and set up a couple of sawhorse tables, then start hand-trucking stacks of boxes from van to workspace. I set up the van so load-in boxes are in the center, restock boxes closest to the doors. Since I move things from restock to shelves during the show, load-in usually doesn't need much attention unless I sold particularly well. In this case, I had to bring out three boxes: banks, stew mugs, and square bakers/pasta bowls, since I'd sold through all my restock on several of these. In addition to almost all of my restock boxes.
Once I've transferred pots from the shed to the appropriate boxes, I need to pull any surplus stock. I took an extra box each of soup bowls and plates with me that I don't have room for at Market, so I consolidated them down to one box each, noted the patterns of the leftovers on an extra tally sheet, then moved them back into the shed.
Last, I mark pots in red on the shed tally that have moved to the van, and add them in pencil to the van tally. Similarly, pots going back to the van are red-lined on the van tally and penciled back into the shed's.
The final step is to get signage and product boxes for Denise's paper and books out from the studio. We don't take them on the road because shows would require us to jury in separately and pay an extra booth fee.