May 2020 dessert party questions

We are taking a short 4 night trip in May 2020. Our first trip was in March of last year and we did the HEA terrace dessert party. This was our favorite “add-on” to our trip.

We’d like to try another dessert party and are trying to decide between Star Wars and the Epcot fireworks. If we do Epcot, it will be the temporary Epcot Forever fireworks, should we go see that, or wait for the new Epcot fireworks show on our next trip? What would you do and why?

Also, our ADR day is 37 days away, can we book dessert party’s then, or will they not be available 6 months in advance?