Hi Mike, if you are going to
Disneyland, make sure you also do "Disney's California Adventure". A great park celebrating California's history, cultures, farmland, beaches, and of course Hollywood. Have been a dozen or so times since it opened and continue to appreciate it's theming and creativity the Imagineers put in it. Your kids will love the 'Screaming Coaster'. It starts out fast and doesn't let up. The music themed to it is very energizing. 'Soarin' over California' is the most popular ride. It is a hang gliding experience over California. Very cool, you can even smell the oranges when flying over the groves.
Just this past week-end my husband and I saw the stage show "The Power of Blast" in the Hyperion Theatre in the Hollywood backlot section of the park. It is a live 30 minute performance taken from the Broadway play and I can't say enough about it. It literally blew me away. These kids are really talented. Mostly percussionists and brass players. The show is extremely powerful, well choreographed and highly entertaining. I put it up there with the stage show of "The Lion King". It's only running for a year. Don't miss it!
Off the Disneyland Resorts Lot, a neat place to have dinner is "Medieval Times" in nearby Buena Park. A great live gladiator-type show with dinner you have to eat like they did back then. With your hands! It's fun, your kids will enjoy it.
Since you have three weeks, consider making the drive (approximately four hours from Anaheim) to Las Vegas. Midweek rates are soooo inexpensive at great hotels. Check out these hotels for great rates: Excaliber, Circus Circus, Stratoshere (has a roller coaster and a real scary, sort of a throw-you-up ride outside 112 stories up), and Treasure Island. Sometimes really nice hotels like Caesar's Palace, The Mirage, New York New York and the MGM Grand run specials, too. Make sure you visit the others like: Paris, The Venetian, Bellagio, and Mandalay Bay. They all offer a variety of shows and attractions; a ton of things for families.
Hoover Dam is nearby Las Vegas and is a very interesting and educational tour, and just the other side of Lake Mead.
Hope this helps, have lots of fun!
GEM