Best way to Orient Bay? Taxi???

[goofydadeo]

During our past two visits to St. Maarten we have rented a car/jeep and driven from the port to our favorite spot on Orient Bay (Kakao Beach Club) for the day. Now we find ourselves with a party of 7 and a van is the only rental vehicle that will hold all of us! Of course they're expensive too ($135/day + taxes, fuel, ins., etc.)! Since we are only going to Oriental Bay and back would any recommend a taxi? How much should we expect to pay each way? Also, is is easy to get a taxi in Orient Bay at 6pm to take us back to the ship by 7pm. Is a taxi workable with a party of 7 (4 adults/3 children)? Any info would be appreciated!