We always do a Tues thru Thurs charter. Crowds are much diminished, both on ferries and in airport (STT). We also do CCW, but having just done this in June, don't expect less crowded mooring situation, there are just more people boating the BVI's post-covid.
So either plan on using BoatyBall, anchoring, or getting to harbors earlier. My thinking is the pent-up demand will lessen over time, but probably not for a few years.