We'll be making our first trip in about a month, and my younger son will be 11 months old - probably not walking yet, still crawling and "cruising" on furniture. I'm a little worried that he'll get sick of being in the stroller/ being held all day and want to get down and move on his own. Are there any areas in the parks (indoors or out) where you've stopped to let your babies crawl around for awhile?