The script is ~55k characters long, depending on the source. This transcript, 55k, includes who is saying the line, as well as descriptive elements of the story, so the actual 'words only' version will be a bit shorter. This one is 99k and includes even more description of the visual elements. From what I've seen, though, most of transcripts have these non verbal inclusions, so the person who added it to the special instructions likely copied those over as well.
I can't speak to the other points, but allowing 55k characters is definitely wild.
Not necessarily standard, but not likely an emergency. Loads of places have the setup required for parallel landings / takeoffs, it's just usually more efficient to have them alternating
Here's a list of the places that have parallel runways (bottom of the page)