If you do an Eastern cruise, you'll have one more sea day than the Western, so you'd get 2 days for Anyone Can Cook. We did a WC in 2017 and our 2020 is also going to be a WC. We did an EC earlier year, which I liked better since it gave us that extra non SW sea day. I didn't go to the SW deck show on either of our previos cruises. My dh did though and yes the fireworks are done to SW music. Actually, you will hear SW music throughout the ship that day, in the elevators, cabin hallways. If you book it, you'll have a lot of fun.