We just did the stroller rental 2 weeks ago, it was $10 per day and you could pre-pay for up to 3 days so you could just walk up and grab one without having to wait in line to pay again, which can be long in the mornings. Plus you can rent one for the whole day and take it between the parks. We had no problem hopping with ours. It will be perfect for your 5 year old, it worked for our 4 year old.