We've done several trips to DLR, but this is our first WDW trip. My kids were still strollerable on past trips, and they napped fabulously in the stroller. Now they're bigger, so we'll have to play their stamina by ear a little and see if they want to take it all in the whole day or take a break. Knowing mine, I don't think they'll want a break.
I am going to miss the stroller! It's so nice having a hub for water bottles, snacks, etc. My younger kid is 7 and has a genetic syndrome that affects his knees, so I have considered bringing a stroller anyway just in case the walking is a bit much for him. I kind of have a feeling he might take a snooze in it if we brought it.
In the past, they'd each take a turn napping at some point. We would deliberately meander in a quieter area of the park until they drifted off, and one adult would sit with them and take a sensory moment while the other adult would ride with the other kid.
We usually aren't rope droppers, but we love to stay til the end and catch the fireworks. Riding rides afterwards always feels like a bonus, as we slip one more (and maybe another) in before finally calling it a night.
Last time we were at DLR my kids were 5 and 7. This time they'll be almost 8 and just turned 10. It'll be way different this time! New park, big kids, dining plan. Exciting!