Hi: Travelling Jan 21-28th to WDW and I have a very, very lazy four year old and want to make sure that stroller rentals are ALWAYS available at all the theme parks so we don;t have to carry him (50 lbs.!!!) Has anyone ever had a problem getting a rental or do all the parks have more than enough to accomodate any size crowd, plus we are going in the "slow" season. Any help please????? 
