Does anyone have any ideas for a stroller rental or purchase for four-month-old, 16 pounds at the park? Do not want to take big stroller with car seat. Any ideas would be appreciated.
A City Mini is easy to rent, and they work very well with 4 month olds. In fact, I've taken a 4 month old to WDW in a City Mini. Just about anything with an almost flat recline and good shade on top should work well for the baby, and then you'll want it to be easy to push and fold pretty small for your sake.
I agree with renting a City Mini. It's very comfortable, reclines for a baby not sitting up yet, and has a full shade. Plus it folds with one hand which is great if you take the bus! Plus there is a large basket under for storage.
We rented a City Mini from Kingdom Strollers. It was very clean and came with a cup holder attachment!