I had a highlighter....the thing that I thought about bringing but didn't is a couple of calendar pages with times on them (you could make your own, with a column for each person in the family across the top and times down the side). Then schedule events like appointments on the page.
Juggling two kids navigators and our navigator made for some occationally difficult reading. Everything the family wanted to do on one page for each day would have been better.
We didn't do (or need) the over the door shoe holder. But we were only on a four day and aren't bathroom stuff people. Toothbrushes, my husbands razor. A brush a comb for hair. My makeup each evening was the glow on my skin from sun and sea air and a little mascara. I did have a bag with more stuff in it (hair gel, additional makeup) that went on the shelf under the sink and didn't get opened.