I am a fan of not packing too much bulk stuff if it is available there. Like food and drink. My biggest bag in the suitcase is usually cosmetics - sunscreen, hormones, lotions, pills, vitamins, Cotton pads, my favourite shampoo, shaver for legs and armpits... Clothing of course depends on where you go to and the local climate. I think it makes sense to take comfortable clothing. Since its also fat transfer, take clothing that cover most of the body as usually it means you have to wear "shapewear" and this does not always look so great with shorts or short dresses. If its sunny, maybe a hat? Scarfs and sunglasses are always good if you want to hide a bit because you are still swollen or bruised. Hair ties or clamps. Maybe instant coffe in case the hotel has only horrible coffee - lol.