In the past, I'm the only one to get a Refillable Mug. I would fill up w/ coffee at the resort CS and then head off to a park. We had a stroller so we had storage for the mug while at the park. Now that everyone gets a mugs, I see everyone wanting to use it in morning too. That's 5 mugs to travel with. Do you usually take your mugs to the park? Is worth the hassle? Does it spill? I need my coffee in the morning but kids don't drink coffee or soda so this why I didn't them one in the past. What kind of drinks are available for kids?