I have always liked Picabu at the Dolphin. They have had a lot more to pick from compared to Disney resort CS locations. We went to the Boardwalk Deli 5 weeks ago and it was good.
The one thing I don’t like about Beach Club and Boardwalk is lack of decent quick serve. Of course, answer was to go in Epcot, now may be more difficult with park reservations etc.
I'd try to do a walk in at the counter for Beaches & Cream, or if you want excellent true quick service, hop into Epcot and get some crepes from the place next to the Ratatouille ride.
Disney springs. when we stay at BW we find ourselves having most meals there as it is a relatively short bus ride. Big river is also a good option as they have more of bar CS food to go.... We also like the Pizza window if they have the pie for a reasonable price not selling by the slice as it seems was on and off not sure what the final is.