Take a bus to Hollywood Studios. Then, it's a short walk over.
If you take a bus to Epcot, you have to actually go through security and enter Epcot and walk through the park...which is a real problem if you don't have AP's or park hoppers and you're not planning on going to EP that day.
You can always try for an uber XL (or have multiple people in your party get two smaller ubers). I did pop to trattoria and it was pretty quick via uber.
From the resort you'll have to budget time waiting for the bus, then 15 or so to HS, then walking over to boardwalk. I'd budget an hour at least to be safe if you really don't want to try for a rideshare.
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