Thanks for all the advice...
To answer one poster, we are at the mercy of the Disney transportation system, for better or worse!
I had been thinking about doing the bus to MK and then the boat, but I was wondering if that might take a while. I don't mind the ride, but DS7 and DD4 might get bored. But, we'll just make it work! I like the idea of taking a bus to the Studios and then one from there to WL, but again I'm not sure of the commuting time. This is my only ADR that is difficult to get to, as all the others are in parks or at CR. But, friends showed us their video of their dinner at WCC and it looks like so much fun for the kids that I think the pain of travel will be worth it.
One follow-up question...someone mentioned that the boat does stop at the campground also? Does this mean that after dinner we could take the boat there and enjoy the campfire activities?
Again, thanks so much for your help...I'm so grateful that I found the Dis and all the wonderful people here!