I don't agree... while EI may be a nice place, so is WHR. Neither is a better or worse place for adults. I was at WHR with 4 adults on a guys golf trip this past January in fact and everyone absolutely loved it. No one felt like it was a "kids" oriented place either, they all commented on how nice the clubhouse, home, pools, etc all were in fact, and both resorts are just as close to amenities like public grocery stores.
Pick the home and resort you like, they're both awesome places for kids or adults. If it's just adults I wouldn't necessarily pick "Disney themed" bedrooms, which you'll find in either place, but they're both great places to stay!