We don't use a bag. DH wears cargo shorts with autograph books in one pocket and one of those water flavoring bottles (that you add to plain water to make powerade or lemonade, etc.) in the other. If it's raining, or we KNOW it's going to rain, we will bring our ponchos (the dollar store ones that fit in our pockets). We like to travel light. No one in our family wants to carry around a bag all day. We always do the meal plan nowadays, so we use snack credits if we're hungry and add flavoring to the freebie water that they give out all over. My kids are 6, 7, and 9. When we had a stroller, I'll admit it was easier to throw everything under it, but it's much nicer to be able to walk around stroller free!