We spoke to a couple with a toddler that was staying in a first floor room in Moorea and asked them what they thought of the room. They loved it, but their next stay they would refuse a 1st floor room because it was it was to control the toddler as she always wanted to run down to beach. So they found they only went out on the patio after she went to sleep. They had a great view of the castle and the fireworks.
Also once in Pago Pago we watch a dad go into one of the small elevators with a double wide jogger stroller with any problems. There was only a couple of inches to spare getting through the elevator door. He said he was used to having trouble getting his stroller in places and these elevators were a piece of cake. The three of us with the stroller rode up. There was enough room without it being claustophobic.