Sometimes, big events bring in touring ladies, even part-timers and amateurs looking to make some quick cash.
FIFA had major issues, all kinds of press about high hotel prices, airfares are skyhigh and such. There were one or two touring ladies arrive, Nymph seems to have done quite well based on social media posts and moved over to Calgary for Stampede next. However, most of them stayed away. It was also taking place in Toronto, Seattle and lots of other places that may have attracted more attention. Plus, FIFA fans travel in groups most often, and unless that group is pretty open about sex work, no one is sneaking away for a shag. They are hitting the pubs and clubs, there were plenty of hookups happening possibly, but mostly unpaid would be my guess.
The market has evolved so much in Vancouver in the past couple of years. Sugar dating has soaked up a bunch of the amateurs and part timers, even established providers are using it. The high end has gotten really high and the lower end has even moved up. The AMP scene in Vancouver may grow with a new agency or two, but it's the same talent for the most part, some ladies work for many agencies and they have to get into the country and those visas are controlled. Media articles says 17K visas were denied around FIFA, I would be willing to bet some of those were for traveling sex workers.
On top of all of that, Vancouver has never been a big touring destination for many ladies. Many skip it, only coming as far as Alberta. Montreal, Toronto ladies especially. That's been a thing for years. So, pooning wise, I think FIFA was a big nothing burger. As I recall, I don't remember ladies raving about being super busy during the 2010 games either.