Hi. Have any of you used a carrier with your toddler? I have a 15 month old who will be almost 18 months when we go to wdw. She will be fine in the stroller but is quite the explorer and escape artist when she is out. I am fearful of waiting in line and having her run off. She is too heavy to hold and she squirms to get down. I used a hotsling last year and loved it. She is too big for it now. Any suggestions would be greatly appreciated! Thanks, Trae