I just want to throw this out there... I worked at the parks a million years ago...it use to drive me NUTS when parents at the end of the night were either hollering at their kids to hurry up or saying we paid a lot for this vacation and all you are doing is whining...the children usually looked worn out and for the most part had been going all day with few breaks. If you are not going to get a stroller for the 7 year old then I suggest extended breaks and keeping in mind his or her legs are shorter and have to work double time to keep up with yours. I am exhausted after a day at Disney so I can only imagine how tired a child is and it is not just a one day adventure it is the build up of tired after a couple of days. Just my 2 cents