Refreshments may not seem like an important service, but when you are thirsty, a cup of cold water is greatly appreciated. If your children are hungry, you will feed them, or hear no end of the complaints! Seriously, though, everyone does enjoy refreshments. We can (and sometimes do) lack this to the extent we think we should have this available. It does not have to be home-made, and it does not have to be expensive. If you bring a box of saltine crackers as a snack, that is more than if we had nothing at all! This might be what you are called to do. Don't think so lightly of that calling.