I asked and was told as a TA I might get 20% off. Even Royal employees only get slightly more.
They want to maintain pricing integrity. If word gets out that they are giving day of discounts then people won't book.
Same scenario as holding fast on dropping last minute prices that they stopped a few years back (covid ecluded)
Then why not just make a separate post and state that for UK guests they have 30 dsys..
I know your from the UK but I'm sure most dont and anyone reading this on their phones can't see your location.