Hi, Steve. First, welcome to DC.
You don't give any indication as to where you are geographically, which might influence your food preparation suggestions. That is if you can use the outdoor grill. Whatever.
At any rate, you could host something quite simple and delicious. A steak dinner with baked potato, salad and dessert.
Choose a nice cut of beef and grill outside or indoors. Have folks participate in the preparation and the seasoning of the steak, taking care of the potatoes and garnishes, getting the lettuce and dressing ingredients, etc.
Dessert could be something like coffee parfaits. Parfrait glasses filled with coffee ice cream, whipped cream, Kahlua, sliced almonds.
Just have fun with everyone in the kitchen and don't worry too much about your menu. Draw on your strengths and those of your guests and you'll have a great time.
"As a girl I had zero interest in the stove." - Julia Child
This is real inspiration. Look what Julia became!