I never had a baby shower for any of my kids but yeah nappies are a killer with multiples. We go through a ridiculous amount of cloth nappies and have to wash daily. One of the most valuable things to me was having people who were willing to watch the kids every now and then (even for an hour!) so I could do food shopping alone or go to the gym or just not be mum.
Another thing is later on if they end up in SCBU/NICU if you take pics of them for mum. I forgot to but luckily the lovely Amy_o did it for me