We were able to go to Disneyland for two days on our Honeymoon, and recently (two days ago) returned from another two days. We bought a 4-day hopper pass for the same price as a 2-day pass. (Thank you, Costco.) Spoiled? Maybe.
Note to everyone: If you have a choice, avoid going to Disneyland June-August. It is hot, and crowded.
Another note to everyone: Talk to the cast members. They know secrets*.
*Our most recently discovered secret: If you arrive at park opening, talk to a Conductor in the Main Street Train Station and ask them for a reservation for the Lilly Belle. Basically, it's a private Disney history lesson while aboard a fancy train full of historical Disney artifacts. Nathan and I weren't able to get reservations this time, we were a bit late. (Hence, the reason you should reserve your spot at park opening!)