Sounds like you're ready to explore the north side of the islands, though it's unclear how much party time you're looking for.

Assuming seas are relatively settled with only moderate 10-15 kt winds, I would head towards Jost Van Dyke. First stop could be Sandy Cay (35~40 minutes from VGYH if you're doing 25 kts). Relatively few day visitors with a nice beach and there is a 30 minute hiking trail around the island (don't think it's been entirely cleared yet since Irma, but passible). Next onto Diamond Cay (5 minutes) with the hike to the Bubbly Pool and/or to the very rustic B-Line beach bar at nearby Little Jost Van Dyke for drinks and a game of corn hole.

From there, might as well make the 10 minute run to White Bay, JVD to visit Soggy Dollar Bar, Hendo's Hideout, and Ivan's for drinks and lunch. On the return, you can make the obligatory stop at Foxy's Bar in Great Harbour, JVD and then Sydney's Peace and Love in Little Harbour, JVD to give Strawberry a hug and see how their recovery is going. From there's it about 30 minutes back to Guana Island.

You can go to the high tide line at Guana Island (basically stay below the vegetation line where they also happen to have a No Trespassing sign, and to the right of the beach club). The beach is very nice and worth a stop, but I don't think it's any better than Savannah Bay, VG if you're land-based at VG.

If you're into snorkeling, you could stop at the nearby Monkey Point as long as the seas are settled, otherwise the visibility gets very murky. Again, if you're into snorkeling, you could ask your captain to stop at The Chimney's at Great Dog island on the return to VG for snorkeling that rivals The Indians.