If you're already at the CR, use the monorails to get to Epcot and MK. From the WL, boat and bus transportation is available to the MK, as well as bus transportation to Epcot. If you're traveling directly from WL to Epcot, I'd just take the bus rather than deal with all of the bus-boat-monorail transfers. It's normally only a 15 minute ride. Though some have reported long waits for Epcot buses, the normal travel time isn't bad at all.
The WL sells a good varity of snacks & drinks in their shop. We will just be picking some sodas & milk (for DS) up in the store & keeping it in the fridge in our room. Better the refills for us anyway, since we drink WAY to much soda when we can just keep refilling the mug.
We will eat a couple of breakfasts at the Whispering Canyon. We will eat some character breakfasts. We will eat a donut or something that we buy in the store (they sell some yummy entamins in the shop) some mornings.