I vote two types of soup can be made in advance and served hot reheated. Say Roasted Butternut Squash soup and maybe simply chicken soup for those who want meat too.. and bread, butter and salad if need be maybe a mixed one two types of dressing easy and then low sugar type dessert? take canned pineapple put a small layer in a plastic drink cup small ones.. then a small layer of orange manderines slices then top with whipped cream. It looks like candy corn and this is fall (hence the squash soup). wait just checked your in florida..ok plan b
one hot pasta dish one cold pasta dish maybe pesto with chicken for the cold and red sauce for the hot? easy done make ahead and reheat.. bread/butter, same dessert. tada! memorable is the group not the meal.. we eat every day its how fun it is to share it that makes it. Put something special on the table like a pumpkin hollowed out and filled with flowers, easy to do memorable.. little pumpkins with name tags..
depending on the size of the group you have to figure diabetics, people on strict other diets, vegans, vegetarians, so meat food and non meat food, veggies to be safe and fruit cups with or without sugar. you can buy sugar free pineapple or pears canned. lite whip cream also
good luck keep it simple you will have so much more fun.. remember its the fun of the event not the food.. just keep it good and keep it simple everyone will like it then. bet they ate all the sandwichfood just fine last time.. people graze its just the way we are.