I went to a kids party once and there was a wide range of ages b/w kids. She had sandwiches(vege and cheese, cheese, egg etc), party pies, sausage rolls and mini hot dogs....
I wouldnt think the little ones would be itnerested in games....put out a few puzzles, if you have a sandpit, set of swings....that should entertain them. I think statues (music playing, then stops) is a great game for kids 5-14 years....with trendy top 40 music of course !!