Being HUGE sports nuts, we eat at ESPN just about every trip (and we go about 8 times a year). We always try to get a booth in the bar so the kids (DS7 & DD11) can play the wall mounted golf video game. You can "check out" the controllers for the game free of charge from the host stand. If we decide to sit in the main seating area, we get the little soccer or baseball shaped water games from the host stand to occupy the kids.
Self parking is free of charge. Valet parking is free if you are DDE members (at least it used to be - I am assuming it still is). Otherwise, I believe valet is $6.
Take the time to wonder around the Boardwalk. We are DVC owners @ VWL but BWV is our absolute favorite because of the location.
If you can, check out Jelly Rolls too. I LOVE IT, LOVE IT, LOVE IT!!!