agree with Del.
Typically start day after we land in STT. We have been able to make ferry every trip to Road Town. Sleep Aboard ready for us a marina (air conditioner/lights on) and we get to boat about 5-6pm. Leave next morning after getting provisions delivered and settled in.
What are your intentions about provisions?

Not sure if BVI VIP gets you any VIP treatment at Ferry.

s/v Sea Tiger (2021 Lagoon 46)