Differences between November and April?

[pmlykens]

Just booked our fourth trip to St. John. In the past we have always come down for the first two weeks in November,our Wedding Anniversary. This year my bride is having a milestone Birthday, and we are booked for the 4th through the 18th of April. I know that this is the tail end of High Season. What differences can we expect, water temp, need for reservations, crowds, etc. Thanks for your observations.

Phil