Yes! There are a few ways to do that. Depending on your park entry/ticket, you can always walk through Epcot and front of the park to the Monorail. From there you just take the Monorail to the TTC and then walk over to the Poly. You can always book a reservation for a restaurant at the Poly and Lyft /Uber or drive over. We usually book Kona earlier, like 7pm, and afterwards grab a seat with some drinks near the front of Trader Sam's outdoor area and watch the fireworks. There are better locations but we like the Tiki flair and fireworks.
Edit: The Monorail option typically only works one way, as by the time the fireworks are over, Epcot is closed and so the Monorail will not get you back to beach club. Again, Lyft/Uber back to Beach Club!