I pay for the ad-free, live-streaming Hulu and there's still ads. My movie was interrupted with an ad for an erectile dysfunction pill, drove me crazy.
Maybe there's a bug in the live streaming setup that Hulu offers then? I just pay for ad-free Hulu, and I haven't seen an ad from them since a week after they announced that plan (I didn't head about it immediately, but I upgraded as soon as I did). I've watched in a browser, the on the Roku, and on an Amazon Fire TV.