Serve food buffet style - and don't hesitate to buy heat-and-serve or better yet, foods best served at room temperature. Stores like Costco and Trader Joe's offer wonderful prepared appetizers and dinner courses. Enhance them with your own special touches of spices or herbs, even just for decoration.
Keep your choice of dishes simple and easy as well. While paper may not be the best "green" choice, there are lovely tin dishes available that can easily be mistaken for "real". Or buy an inexpensive set of white dishes that go with everything. It won't matter if one breaks.
Now, sit back and enjoy spending time with your family and friends.