OffSeason Blues? Oh, you mean the time to go on holiday to areas where the parks are still open.
California, Texas, Florida, Dubai, Spain, Japan. All great destinations to go to during wintertime. For all the other moments I'd still have the few parks in the area that are open during a short period in the winter: Phantasialand, Efteling, Slagharen, Toverland, Europa Park. So yeah, I won't miss any thrills during offseason.