I have gone to Disneyland at various times of the year, managing to make at least one trip per year for the last three decades, and, to me, the upcoming refurb schedule seemed pretty extensive. Happened upon a newspaper article on-line that suggested at least some of the ride closures are due to city/county/state mandated work, possibly to make them safer. SoCal is earthquake country, after all. Not sure if this is true, but it is certainly possible.