Thanks for all the quick replies! Looks like we'll have no choice but to spend our last night at TMM base. It's just usually hot and buggy, but it is what it is. Its the water taxi that is pushing the 9am pick up. But I can see their logic.
I think we've used AC taxi before on Tortola.
Kim, thanks for the taxi rec on Virgin Gorda. While I rental might be cheaper, Andy's not interested in driving those manual transmission trucks over and around the hills of Virgin Gorda. Looking for the easy button this trip. :-)