A friend of my son's invited us over to swim in their pool this afternoon. This is our first play date with them. They also invited us to stay for dinner, but I declined because my husband and 1 year old will be home, my son is very shy, and I thought it was better to keep his first play date simple and fairly brief.

Should I bring something? Treats, or a bottle of wine? Complicating this is that her oldest son has serious allergies - ordinarily I would bake cookies but I'm not sure what he can and can't eat.