The DLP boards tend to be a little quiet!
I was there this past October, coinciding with their Halloween celebrations. They really go all out at this time of year, PumpkinMen and Pink Witches invading throughout the park but especially in Frontierland.
The park is beautiful, with careful attention to detail and theming. Are you planning on staying at one of the 'official' hotels? They tend to run on the expensive side and some of the 'neighbor' hotels can be just as close. The bus system is quite efficient, but can get super crowded at park closing.
The studios were fun, but can be done in a day. Hopefully with the addition of Tower Of Terror and a Toon based land, this park can become a two day attraction.
Disneyland's rides were often superior to their Anaheim & Orlando counterparts: Pirates, Phantom Manor, Big Thunder Mountain. All absolutely amazing!
I found quite a few of the guests to be on the, well, impolite side but CM's were generally great!
Have a great time and don,t hesitate to ask if you have further questions...