Play dates are a wonderful opportunity to help younger children play, socialize, learn and discover. Since play dates are often planned, it's best to think ahead about what activities you will do and what food to have on hand if the play date happens to be at your house. t tBut, don't stress. Don't make it a bigger deal than it needs to be. Even if preparing lunch for more than one child doesn't necessarily come naturally to you, just play it cool and trust your instincts. Here are my top…