Nope - no time restrictions!
The other resorts have time restrictions because people used to park at the monorail resorts & not the theme park parking - to avoid long walks to trams, waiting for trams, etc.... It became such a common practice that the resorts had no place for their guests to park!!
FtW parking is not real convenient to any theme park transportation - so they never had that problem. The only resorts I know that limit your parking time are the PR, CR & GF - which are all on the monorail loop. We've never been given a time limit for parking at any other resort.