The worst dinning experience I've ever had on Disney property was at Spoodles this past Dec. It was awful on SO many levels. My fettuccine tasted as though they put the wrong sauce on it & rinsed it off, then put on the alfredo sauce. Our waitress was so bad that another waitress had to help her, she wasn't new by the way. It was so confusing because we were dealing with two waitress. We actual had our coffee & dessert brought to us twice. It was just horrible. I know I'm the minority, but it was bad.
Big River Grill Brewing Works, on the other hand is great. You have to keep it in perspective though. It's a glorified burger joint. If the menu sounds good to you, I would definitely change the resi. Their burgers are great! That's one of the best parts of staying at BW, if you order a burger from room service, guess where it comes from. So good!