The other issue around this may be supply of replacement buses / coaches midweek.
Most bus / coach operators have spare vehicles at weekends and in school holidays, but getting more than a handful of vehicles out in school term is not going to be easy.
It can be done if the price is right (as in events like the Olympic / Commonwealth Games, which involved buses and drivers from all round the country, with the resulting accommodation costs) or if it's long term enough for it to be worth leasing vehicles, but there's still not quite enough bus / coach drivers to go round in many parts of the country.