What kind of bag do you carry with you in the parks? I have two small children, age 3 and 5 on our next trip so I'll need to carry some snacks, wallet, tickets, camera, wipes and probably pullups. I have a Baggallini cross body bag now and I hate it. I have a shorter torso so it falls awkwardly on my chest and shoulders and is super uncomfortable to carry. Should I get a small backpack or a different cross body bag? Any suggestions? Nothing too large.