As far as I'm aware, In the Hall of the Mountain King (ITHOTMK) has featured in the 2008 Resort advert AND the Mutiny Bay advert too.
Not sure what you mean by the UG Land "one" though? If you mean the advert then no, I can't see the 1999 advert coming back on TV but if you meant the Music in UG Land then the UG Land music didn't fully leave, its always been there, just under the breath of the annoying music played by Corkscrew and Rita - Queen of Speed.
Hope that was some form of help to you. :D