We are 4 arriving on Saturday. We have never had a problem with ferry tickets but apparently this time, we waited too long to pull the trigger. We were hoping to be on the 2:30 from CM to Tortola (now sold out). We were told we could get on standby and would probably be able to get on. If not, there is the 5 o'clock. So, do we wait until we get there to see what's available. Because they are two different operators, if we buy the 5 o'clock, I would doubt that they are refundable or transferrable. Water taxi is a little rich for our blood. Any other suggestions/experience? Thank you.