Yeah, you'll have to take the bus to a theme park or to Downtown Disney in order to get from resort to resort. If you want to head to the Contemporary for Chef Mickeys, you can take the bus to the Ticket and Transportation Center (or Magic Kingdom) and board the monorail to the Contemporary (hope that's right!).
I agree with the 2 PP that the two restaurants are CA Grill and Whispering Canyon =)