I think it is clear the input for others is 50/50 pros and cons; final decision is personal preference.
As mentioned during day 1-4 you can enjoy being underway, improve sailing skills, teach others on the boat and moor at 14 different options for the night, still enjoying the beauty of the BVI.
You are not restricted to only a few locations.
The traffic is minimal, the bays are quiet.
Day 5-8 will be wonderful service
ashore at restaurants with no crowds
The Bathes will be like in the good 'ole days!
This is a step back in time sailing in the BVI
I agree book for as long as possible, but dont rule
out if only 8days
No port of call day 1-4 except for test at Nanny Cay
If someone tests positive it means 14 day quarantine at own expense
(this seems more concerning than initial 4-day)