I also prefer the GBExpress but unless things have changed dramatically, it is considerably more expensive than the Marigot ferry, particularly if going as a family, and it's also much nicer if you're actually in the Mullet/Maho/Simpson Bay areas as you catch it almost across from the airport.

Depending on your plans for the day and while I don't have any specifics, I know there is at least one organized day trip that might be fun for a family and more reasonable, too, if you're actually considering the GBE. I don't know the name of the company but as I recall you take a catamaran to Anguilla and then a bus or cab to a specific beach and I believe lunch is included in the overall price along with time at a nice beach for water activities. We've never done this one but I have heard people speak of it and they seem to really enjoy the day. Hopefully, someone else here will know the name of the boat or company that offers this AXA dat.

And if you're staying at a place that has a concierge or activities desk, I'm sure they will offer it. <img src="http://www.traveltalkonline.com/forums/images/graemlins/handshake.gif" alt="" /> <img src="http://www.traveltalkonline.com/forums/images/graemlins/handshake.gif" alt="" />