I make this frequenty. Most of the time I leave out the apples so there is no last-minute cutting and chopping. It is great with or without the apples.
You dinner sounds very nice. I hope you have fun with your friends.

Fruit and Sour Cream Coleslaw

4 cups shredded cabbage
2 apples -- sliced thinly
1 can pineapple chunks in juice -- drained
1/2 cup green grapes
1/2 cup red grapes

Dressing
1 cup mayonnaise
1/2 cup sour cream
4 teaspoons lemon juice
1 teaspoon sugar -- to taste
1 dash salt
1 dash pepper
1 dash ground cinnamon -- to taste

1. Shred cabbage very fine, place into covered bowl or plastic bag and chill.

2. Dressing: Blend together the mayonnaise, sour cream, sugar,lemon juice, salt, pepper and cinnamon. Chill.

3. Drain pineapple very well, wash grapes and add to pineapple; chill. Just before serving, wash, core and slice apples into thin slices, then in half again. Mix apples along with grapes and pineapple into cabbage. Toss to blend well.

4. Add dressing and toss to coat. Don't add dressing all at once in case you don't need it all. This is a little different than the usual coleslaw, but very good and easy to prepare. Prepare ingredients ahead of time, then put salad together whenever you wish.