We've been coming down since 2007 and I have never seen the BVI as busy as they have been the last 10 days we've been here. It's been truly insane. (There were two cats on the DOCK and TEN mega yachts at the back of the anchorage overnight at Pirate's Bight a few days ago!) BUT we haven't had trouble finding room anywhere in the early afternoon. We don't go to Cooper or Trellis, but for our stops we've had no issues. I'm sure March will be fine- we were here last year in March and it wasn't busy at all.