Hurra! I finally found the video of the opening of the pavilion that was broadcasted live on Norwegian state television on the official inaguration day June 3th 1988 by the Crown Prince (now King) Harald!
The whole video can be watched on https://tv.nrk.no/program/FUHA06003085/velkommen-til-norge-i-florida
If you for some reasons are unable to watch this video (maybe because of copyrights etc), Ive added some of the photos from the broadcast.
Im superstoked about this and superhappppy I finally found what I was looking for for literally years…