Has anyone seen Fantasmic at both DL and WDW?

I enjoy Fantasmic but it's not a "must-see" favorite. We are WDW passholders headed to DLR -- is Fantasmic any different there? Should we make a point to see it, or not spend the time? My least favorite thing about it is the stupid amount of time you end up spending sitting around the stadium after you get there early enough to get a seat within two zip codes of the stage....

If we do go, any idea what we can get away with in terms of arriving early? Do we have to go an hour ahead or more to get a seat?

Thanks...