Allure Sea and See Tour (Tour ID SM94)--independent version+beach break add-on?

[souyouki]

I'll be on an Eastern Caribbean itinerary on the Allure, and my cruise companions have found the Sea and See Tour (Tour ID SM94) to be interesting. In summary, the tour consists of:

 

• drive to Grand Case on the French side;
  
• board Seaword Explorer at the Grand Case pier; and
  
• shopping/exploring at Marigot.
  

I was wondering if it's possible to take the Seaworld Explorer tour independently? And if it's possible, what would be the best way to combine a beach break with the above?

 

Thanks so much in advance for your help!

 

(Edited to add: In case you're wondering, not everyone in the group would be going to the beach stop; also, I was hoping to avoid the clothing optional beaches.)