You can contact Dreams Unlimited Travel - a DIS site sponsor. They will be able to assist with any discounts available when you want to go to DL. They have agents right in the DL area eager to help.
This is great advice. I used my DisneyVISA at DL and kept getting discounts I wasn't even aware of......discounts off a TS meal at Cal.Adv, discount off of merchandise at the Emporium. Other things with the DisneyVISA (which I knew about): meet and greet free photo, free stroller rental (although I'm not sure if they're still doing this promotion).
I had asked one of the DVC Guides at Disneyland if there were "Perks" for DVC members specific to Disneyland when I was last there in Sept. They gave me a little Perks book and it had some discounts but nothing for hotel.