Last May, we had strollers for our 3 (2 months from being 4) year old little boy & for our 5 1/2 year old little girl.
We thought about renting, but then decided to buy 2 Chicco Caddy strollers which we loved. (I didn't want to bring our bulky double stroller that we had purchased when our DS was born.)
Of course, when we bought the strollers, it was w/ the knowledge that we would get at least 2 years' use out of them at WDW.
And, so, we're planning to use them again this year.
In your case, you might be better off renting a double stroller for your two older ones, but I don't see any problem w/ them riding in a stroller.
I just think strollers make it so much easier for young kids & their parents - Like DisneyMomX7 said - -
If they walked the whole time (especially Epcot) we would move at a snails pace.
This can be a hot topic so do whatever you feel if right for YOUR family. For us I love the convenience of the stroller and having somewhere to put things. The kids like it because it's a special treat - they definitely never use a stroller at home. It makes us have a more enjoyable vacation - isn't that what it's supposed to be all about?
There were several times we would park our strollers & let the kids walk & pick the strollers back up as we backtracked (like in Toontown or Fantasyland). But I was very glad we had them.
Strollers allow us to go at a faster pace, and the kids don't get as tired or as grumpy. At parades, they got to sit in the strollers instead of on the hot pavement. We clipped their drinks to the strollers, so they had drinks whenever they wanted. I was super-pleased w/ our strollers & very glad we had them!
