Hotel that I cancelled through the room block back in February charged me one night's stay
First time that's ever happened! I initially booked the Comfort Inn through the Otakon web site but changed it in Feb this year when a better hotel became available (and I changed from that second hotel to a third hotel even after that a few months later). I'm going through this month's charges and I see that the Comfort Inn charged me over $200 even though I cancelled literally months before the May 4 deadline. I missed it since I confused it with my main initial hotel charge but luckily I went over my credit card statement again and caught it. So I'll be disputing this of course but wanted to warn others to be aware of this!