Take it!!!!
I plan on bringing my double stroller in April for my then 7 and almost 5 year old. Honestly, I haven't used a stroller for my kids since our last trip to WDW last Feb, but with all the walking and back to back late nights, I like having the stroller for them. My 4yo still naps now and I am pretty sure she will in April too. We like having the option of either parking somewhere when it is not needed and having it when it is needed. it also comes in handy for caring stuff.
Also in the past, We have been caught in the rain a few time. The kids loved staying dry under the rain cover (which I will also bring)
Take it...It may save your sanity at the end of the night!