Good grief people - I didn't say kids weren't healthy if they needed a stroller, I said it was worth looking into "if you didn't already know why they needed it". I said it because I would be looking into it for a person of almost any age beyond school age (including myself or dh) who wasn't able to keep up. Now that it's clear that parents are using them for the convenience of not having a whiny child I GET IT! If that is your reason, and you know it, then my answer clearly wasn't targeted to you.
To each his own.
To each his own.
I thought he would want a stroller our last trip too, but he never complained once about being tired and we did comando style. I say get the stroller if it makes him happy but just prepare yourself to push a 8 yo around the park when your hot and tired. 
) My niece turned 5 a month and a half before the trip. My nephew was 6 ½.


At first they just thought she had growing pains, or was out of shape.
) in air conditioning. I have witnessed many families where the parents are sweating pushing the kids in the strollers and the kids are bouncing in the strollers (maybe it's the excitement...). 