Hello, Elle!
The only cemeteries that I know of, apart from my local ones, are Arlington National Cemetery, and Greyfriars (Bobby) Kirkyard, in Edinburgh. (And Boot Hill, but not sure where it is.)
I think calling it an "unfair" clue is a bit of a stretch, for I am sure many, if not most, will have heard of it.
But it was of no use to me!
I shall check it out on YouTube, though.
18A. "Program", I think that could be the American English spelling.
Rose Wild wrote a piece about using Americanisms in crosswords in her column on Saturday.
There have been complaints!
I have not watched any more cycling.
I'll wait until the Elite riders race against the clock.
Looking forward to seeing how young Elinor Barker goes.
And Tom Dumoulin and Chris Froome in the men's race.
And I have ordered me another book!
"The World of Cycling According to G"
"G" is Geraint Thomas, the Welsh rider.
I like him.