I did wonder if it'd been closed or sold yesterday when I spotted a TV van in the car park on the way home.
I *think* I've seen C17's in quite a few times, it's either them or C5 galaxy's. IIRC it's one of the longest civil runways in Europe. Any time there's something kicking off with US involvement, the airport seems a lot busier with military traffic. There's often fast jets through but mainly C130/Hercs. It's also the airport used for any terrorist incident; there's a hatch by St Cuthberts Golf course the aircraft are instructed to park over that the special forces can access from afar via a tunnel.
I stay 5.5 miles from the airport and it's another mile to work, slotted between the 2 runways, so it's handy for me. I often get the train to Glasgow if I've cycled in as the GF lives there. I can't honestly say that it's easier to go from Glasgow Abbotsinch than Glasgow Prestwick from the west of the city; I hate paying for parking and buses, so the public transport is more of a hassle to Abbotsinch from the West End in our experience. I can't see the point saying it's not handy from Dundee, that much is obvious (despite the road being a mix of Mway and dual all the way). Leaving from Ayrshire, Edinburgh isn't exactly handy either. Dom, I thought you were in Kirkie East of Glasgow btw?
From a business POV, I'm not sure we really make use of the airport. Our inbound and outbound goods almost always go by road. However for other aerospace businesses nearby I'd assume it to be vital; the Boeing Dreamlifter (for 787 parts) is in often and occasionally the EADS Beluga. Additionally, many airlines use it for pilot training bump & go loops (where I assume the relative quietness is a bonus). Thompson have had 787s up recently. As above, there are often Antanov 124's in and very occasionally the 224. CargoLux fly in several times a week with their new 747-8's and AirFrance Cargo use it among others. Think they've lost Atlas & Evergreen over the past few years though.
I can only really offer anecdotal evidence, but Pete & Mrs Pete will have a much better idea of everything that goes on there. Oh, and guess what happens when Abbotsinch & Edinburgh are fogged or snowed out, Prestwick is open almost always. It's far, far from perfect, but as a regional airport is both much larger than usual (with the associated overheads) and much more important to the local economy (I'm thinking compered to say Bournemouth or Cardiff etc..). That said, I'm not entirely comfortable with the Scottish Government buying it, especially their motivation to do so this year.
They do, badly, need a new slogan though.