Something for the experts here (and sorry, I don't wanna hear any answers from newbies like "I read it in As It Began so it's true" :-)
1. Sun City 1984 - how many gigs in total? I list 7 gigs on my site but somebody told me that "Fred lost his voice after the first gig so the 2nd and 3rd nights were cancelled. I seen them on the fourth (last) night of the tour". So were there only three gigs? It's well known that Freddie lost his voice but I thought that's why the gap between 5th and 10th October is there. On the other hand, I can't imagine them planning 9 gigs in one city :-)
2. Princes Trust Gala 1988 - was on 5th and 6th June (if I understood well) - but on which day of these two did Brian and John play there? Is anybody 100% sure?
3. Styx - supported Queen in 1975. But somebody told me that also supported Queen in 1976 - for example in Toledon (15.2.1976). Is it possible? Looks like a mistake to me.
As for question 1 (Sun City):
The major event of 1984 however, was the visit to Sun City of one of the world's leading rock group Queen with their lead performer Freddie Mercury. By noon on the first day of booking, all 63,000 seats were sold out. The opening performance on October 5 was electrifying. However, in the midst of the performance on October 7, disaster struck when Freddie lost his voice. Hazel Feldman tells the behind the scenes story of this nightmare for her, as well as for Computicket with all the 'refunds'. link
So yes, some concerts were cancelled.
As to Toledo, I am only guessing, but my guess is that listing Styx as the warmup would be a mistake. I saw Queen that following Wednesday night in Saginaw, Michigan, and Bob Seger was the warm-up. Queen played in Michigan before and after Toledo, and Seger was the warmup then. I'd 'think' he'd have traveled across the state border to warm up there as well.
joe+III
Pretty sure it was the 3rd gig, about others I'm not sure.
It was common in the late 60's and 70's in the state's that bands had different opening acts in different places, since bob segar was pretty big in Michigan maybe he just opened for those Michigan gigs, but Toledo is not even 30 min out side of Michigan, Pretty much you'll need a ticket scan( if they list the opening act) to see who opened.