We also had our kids walk from 4/5 up except for one trip where we actually took two doubles (ages 6,4,2 and 7 months) When I think of what we used to carry to the parks

Oh, I am back from my side trip, I think the two strollers are easier if you are absolutely sure you need two. Kids can walk a lot farther than they let on when they want to see the next ride/character/ whatever. And at the end of the day they were exhausted, so you had the line 'just walk back and you can lay down all night long' Also, like suggested above, you aren't really going to need a double for much else. We went with a cheap stroller that had a canopy and basket for the younger ones when they were 5/3. We did have to
rent a stroller for one of the older ones once when he got a stomach virus in the middle of the trip. Still that cost is so much smaller than a bigger stroller.
I think the side by side strollers are much harder to navigate through the people, the front/back are easy because they are just one person width so you just go wherever you want, but the double width made for some frustrating walking for us.
Our last trip we were stroller free for the first time ever!

We were in shock and were at a loss for where to put our stuff! We actually took one of our old cheap strollers to the MK one day just to put our jackets/ pants in and parked it and came back to it when we needed to get them in the evening. What we won't do to save the locker fee
