Well I might not be the most qualified here, but I'll tell you guys what we did here in Puerto Rico. After attending my first show in the U.S., back in 2000, some of my friends and I decided to try something like that here. We called the show "P.R. NNL" that was held on Feb. 25 2001.
We took the classes from the U.S. show and adapted them to what modelers build here, classes here were a bit different, being more like the ones in the 1:1 car shows. All shows here (as far as I know. . . ) were "judged" and we liked the way the "NNL's" are not judged but chosen by the modelers attending the "show". Anyway, we used the part about "no judges" and the classes from the U.S. show, and there you have it, the "P.R.NNL" was born. The were mixed opinions about the show but, to me it was a success. . . then again. . . I might be a bit partial as I was one of the organizers. . .
Nowadays we have the "Caribbean Scale Auto Show" (CSAE for short) held each year by "The Small World of MB" (Barbo, here on the Forum. . .), and now on its 6th edition, and in my opinion, it's based in part on what we learned from the 2001 show.
It is also an "NNL style" event as we call it here, being that prizes are chosen by the competitors not by judges. . .
That's my $1.06. . .( 99cents +7cents Tax. . . )