Bob Marley,
Try landing outside their published hours and you will wail, even if a big jet is flying in the out of hours thing still applies -even though the airport is open nearly 24/7 this Summer on occasion, according to the timetable. Sorry when I wrote top dollar I meant non-negotiable, unless you are an operator with huge clout!
Speak to the GA guys, they will tell you, not just the one-off puddle-jumper but the Commercial GA, it can be like missing the last train. If the weather holes you up somewhere you cannot fly into HUY without paying a fortune once past that magic number, so it is either pay up or stay over for the night!
With an ex Walmart person consolidating everything in Nottingham Asda, would have thought the stack it high sell it low philosophy would apply, or is that just staff!