There are many things to be done but if you have planned well, you should have time to relax & enjoy the day. Plan things out so you are able to enjoy your company rather than spending all your time in the kitchen. Ask someone to come early to help you with any last minute tasks, like popping the rolls in the oven while you mash the potatoes.
When it’s time to put the food on the table, recruit help. Things are hot, get them out fast!
Most important, you should enjoy your celebration. If you aren’t having fun, no one is going to enjoy themselves. Relax & have fun. Enjoy your company. Remember, it’s about the people, not the food or the location. You want to be the #1 guest at your celebration!