Another layer of difficulty in this situation is that RM doesn't own the track the railway does and RM pretty much dances to the railway company's tune in terms of access; RM doesn't like to admit it but it's true and in addition railway companies are famously full of themselves/difficult to do business with.
So you have someone like RM charging frightening amounts of money for something there's no iron clad guarantee they can deliver not an uncommon scenario in the tour business and that's why they want a week to make an offer they need to kick this upstairs/figure out who's not responsible yet again-IOW corporate ass covering in overdrive.
So you have someone like RM charging frightening amounts of money for something there's no iron clad guarantee they can deliver not an uncommon scenario in the tour business and that's why they want a week to make an offer they need to kick this upstairs/figure out who's not responsible yet again-IOW corporate ass covering in overdrive.