From Starlog, published August 1989, comes this article (paired with the previous article on Jimmy Doohan) featuring George "Oh, my!" Takei. He, moreso than some of the others it seemed, resented the small part he had compared to the three main stars. As far as I recall (not having watched it as much as the other films), he was featured as much as all the rest of the secondary cast, part of about every action scene. I understand his frustration, but really, he was included in it more than most TV episodes had him. At least he got to be a captain in the next one, which was some consolation, I'm sure.
Bonus: Below, Kirk cuddles up to a belly dancer on Argelius, but strikes out as Scotty gets lucky. The girl would have done better with Kirk; more kissing and less knifing!