Edinburgh is the closest airport. Approx 40mins to 1 hour from Glenrothes via taxi or train. Glasgow is an option but is another hour away from Glenrothes.
There are hotels in Glenrothes including a Travelodge and Premier Inn. In Kirkcaldy, which is around 15mins away by taxi, there are The Victoria Hotel (where a lot of Helen's family will be staying) and The Strathern Hotel amongst others. There are also a number of Air BnB's in Glenrothes and the village of Markinch.