Disneyland has a different sytem them WDW. They do offer the Disney express bus(
www.airportbus.com) Its is service that is actually offered by grayline. You will be responsible to get your bags at the airport and get them to the bus. They will load them on the bus for your, and take them off for you at the hotel. You will reclaim them at that point, and get them to your room or to the bellhop.
The bus will service many hotels. If you are staying the DLH, you'll be one of the first stops. When its time to go back to the airport they will take you to a transfer area where they divide passengers up according to the airport they are going to. Its sort of a pain, but its affordable.
We did conc. at the PP last fall. We enjoyed it, but wouldnt pay for it again. For toiletries you'll get little bottles of shampoo (and either conditioner or an all in one- can't remember), lotion, and soap with Mickey on them. Conc. service will get you pop, water and juice in the lounge. As well as a cont. breakfast (pastries, cereal, fruit), afternoons/ evening snacks, DVD's to borrow, express check in, help with making any arrangments while you are there, etc.