We too have been on the Boardwalk on all nights. From the piano bike to the Russian cowgirl, you and the kids will not be disappointed. ESPN has an arcade (although I heard they are closing the one at BW and relocating to DTD, just rumor). The resorts arcade is just off the Boardwalk, by the pool. There are also a few carnivel type games, whack the frog, basketball, and squirt water in the clowns mouth.
You can walk over to the bridge that crosses behind Atlantic Dance to the Yacht Club and watch Illuminations from there, it's really kind of neat, if you don't want to go into Epcot. You will also be able see Wishes from the BW if you stand by Seahore Sweets and look towards the north.