Being a Disney Ice Cream Affectionado I can tell you that Disneyland is extremely lacking in the ice cream department.
You can not get soft serve chocolate ice cream anywhere, yogurt yes, ice cream no, dole whips can not be swirled with ice cream, no strawberry swirls, and no citrus swirls, no giant homemade ice cream cookie sandwiches at the Main Street Bakery, no Yogurt coverd Minnie Bars. Catch a Flave at DCA was decent but didn't live up to the hype. The Main Street Ice Cream Parlor was just as good as in Florida. The frozen lemonade cart offered frozen lemonade with a flavor added option, cherry, vanilla, or raspberry. DD wanted cherry but they were out, so she opted for vanilla, big mistake, it was inedible. I opted for no flavor added and it was a good choice. Overall I found the ice cream options limited.