Going to Disney in August and I have the Heys travelmate but due to a herniated disc in my neck I can't use it because it goes on your right shoulder and can not put that much weight on that shoulder. So ihave th VB hispter which will hld my money and such but In eed another bag for change of clothes for DD5, snacks and drinks, ect. please help, I don't think I want a full backpack and I will be locking this bag up with the stroller. Any suggestiosn on a bag