I did a lot of laptop warrioring at Beach Club. There's a silly room in the DVC side lobby no is ever in with a pool table. It might work for your needs. The pool by the Beach Club DVC is also very quiet, because all the kids are in stormalong bay. There are always people out there napping and reading on the loungers.
You don't need to take the boat to BC, you can just walk.
Best lunch choice is definitely Ale & Compass at Yacht Club, though right on your price point. But I don't know why you would leave Epcot, where the best food is.
