I think most don't know any better. After seeing it at DHS for the first time after seeing it a lot at DL, a lot of the comments I heard leaving the theater were in upmost praise of it. I found it to be a huge let down not knowing they two shows were different. Wearing my Disneyland attire led to a few conversations and no one I spoke to had ever seen of the DL show. Most didn't know there was even a DL version.Do they love Fantasmic circa 1998 or do they tolerate it?
I do think the DLR AP base does a good job holding feet to the fire with park updates.