I will have almost 4 and almost 6 year olds at parks in Feb. Eldest doesn't use a stroller but I am worried about her giving out late in the day even with breaks. We went to Chicago late spring and she did great but we still used a borrowed sit and stand in the evenings after a day of musuems. Now they exceed the weight limit for a sit and stand. I will definitely take a stroller for youngest but she is not good about sharing. I am leaning towards renting park strollers as necessary. I am a newbie to Disney and my mom warns we will need it most when leaving the parks. I don't want to lug a big stroller though. I saw that babies r us has Maclarens for rent, but at 56 pounds, my daughter is pushing the weight limits. Have you pushed a big kid in any Maclaren umbrella stroller? Is it manageable?