Read Hydroguy's sticky thread at the top of this forum:
http://www.disboards.com/showthread.php?t=1520483
Do you want to get up late, wander around not quite knowing where things are, wait in line for rides anywhere from 30-90 minutes?
Or would you rather get up early, be familiar with what rides get busy faster, get to the parks at opening, and ride every ride your kids want with no more than 10-20 minutes' wait all day long, including taking a long midday break to swim and nap back at the hotel?
If the latter sounds better to you, for all the money you are spending on this vacation, it's really worth it to get familiar with how the park works. Some people like to say, relax, just take it all in, go with the flow. Those people usually don't want to ride the rides much, or they are AP holders who have been so many times that the rides aren't important to them (or they really, really like hourlong lines for a 3 minute ride!

)
If the information gets to be too overwhelming, a couple of guides can do it for you: Unofficial Guide to
Disneyland has lots of info and references, plus some premade plans you can use for touring. There's a downloadable program online called Ridemax (ridemax.com) which is fun to work with; you input the rides you want to do, and it gives you a touring plan. ($15 for a 3-month subscription).
Otherwise, getting familiar with how FastPass works, willingness to get up early, and a little research to decide what you really want to see, will make your trip LESS stressful, because having a plan in place means you don't have to stress about the decisions once you're there. You can ride lots of rides in the morning with little wait, then come back after your break and do the leisurely strolling, shopping and enjoying the atmosphere.
Hope that helps!
