Looks like Disneyland has just officially annouced refurbishment schedules for these two rides.
>>>>" Alice in Wonderland at Disneyland park will close at the end of the operating day on March 9 for an extended refurbishment. In addition to routine maintenance, minor changes will be made to the exterior of the attraction. Alice in Wonderland is scheduled to reopen summer 2014">>>>
>>>>"At Disney California Adventure park, The Little Mermaid ~ Ariel’s Undersea Adventure will close at the end of the operating day on March 19 for maintenance, and is scheduled to reopen in late spring.">>>>>
Interesting to note... no exact dates are given for when they will reopen. Who knows if these dates or info will even be there a few months from now?