You certainly can visit the Oil Nut Bay Marina Village via catamaran. There is a well marked navigational channel between Saba Rock and BEYC that will lead you right to the Oil Nut Bay Marina where there are both mooring balls (FCFS, but we never fill up all the way) and dockage available. Dockage for the day is complimentary (just hail on Channel 16), and $2/foot right now if staying overnight (send an email to marina@oilnutbay.com if interested).
I attached an approach map for easier reference as well.
Additionally, the
Oil Nut Bay Beach Club is kept private for homeowners and villa rental guests, but we do sell 15 day passes per day to the Beach Club to outside guests for $195/person for adults, and $95/person for kids under 13. Also, I'd happily give anyone a free tour of the Beach Club and or villas/suites if you just want to check it out.
Biras Creek is indeed open! I would recommend not going to the Terrace at sunset as the mosquitoes were truly horrific. I have heard good reviews about the $200/person, 12 course omakase experience. But have not yet gone myself