Christmas dinner

I dread Christmas dinner. I cook for about 10 and always get myself flustered. What is the best way to serve up dinner please? My kitchen is not tiny but I don't have enough room to lay out 10 plates to serve up so I usually put serving dishes on the table but there isn't a lot of room and there always seems to be arms stretching everywhere waiting for dishes, especially with having to sort the children. I get so stressed and this is after we seem to sit around waiting for youngest son and family to arrive who are always late. I know we always expect too much and perfection isn't possible but I would like a smoother day for once.