I spread it out over a week, so it's very manageable. And everything is served room-temp, so there
is no last-minute cooking. Most dishes can be made a week or several days ahead--in this case the three crostini spreads, the sardines, the radicchio, and the stuffed peppers. I baked the tomatoes and the walnut cake the day before. (I also toasted the bread the day before, but I wouldn't do that again.) In the morning I made the frittata and shaved the veg for the salad. So it's one or two dishes a day over three or four days.
We do hire a staff person or two from a catering company, which takes a lot of the load off on the day of. They refill glasses and take away plates, carry platters around the table or plate if necessary. I'm usually hands-on with the food, but this year one of them topped the crostini and took the platter around while we had our prosecco, and later dressed the zucchini salad at the last minute, which was good because I'd worried about it sitting in the dressing too long. Plus they do dishes and clean up the kitchen! So that takes a lot of the stress off as well and means I can actually enjoy the day.