Anyone Been to Universal Orlando?

Help!  Anyone familiar with the attractions and layout at Universal Orlando?  I'm planning a family trip for next year and we're trying to figure out how much time we need to allot to Universal Orland to see both parks.  My mom really, really wants to visit them, but she doesn't do roller coasters or water rides, and she has limited mobility.  Universal has a "Rider's Guide for Disabled Travelers" but it didn't tell us what we need to know.  Specifically,  do any of the rides have those moving walkway things?  And if you don't do many rides, how much time would you need to give both parks a good go?  If you have any advice, feel free to leave a comment or email me at gooshanne@live.com