This airport is the most ridiculous, banana republic operation I have ever had the misfortune to fly into. Whoever wrote their WiFi contract was either an idiot or on the take -- I strenuously object to being forced to pay usurious rates for bandwidth, then have to waste my overpriced time waiting for miscoded intersitials.
ETA The ads are branded 'mikrotik hotspot', and the network name is npwireless.com. I am definitely writing a couple of smoking letters later this week. These people should be avoided at all costs.