You slice and serve. YOU, slice, no one else.
You can hold this for a couple of hours in a hotbox, oven, or alto sham. It just takes watching and temping if you've never done it before. If you use an oven put them in at 180F. They'll be fine.
Anyone this is something you should be able to do with your eyes closed, and believe it, it's not that difficult. It just takes attention.