Is Katsucon worth going to even if I'm already going to Otakon next year, or is it different enough from Ota? The Gaylord is sold out, so it worth even going if you have to stay at an off-site hotel?
That depends on what your going to the con for. Do you want programming, panels, guests, huge dealers hall/Artist alley? Otakon Want to Party or like to cosplay/take photos then Katsucon.