I would think you should be able, as their restaurant L'Oursin is available to book on the Open Table app. The number of SXM restaurants using the app has almost doubled since June from what I can see. Easy to book many of our favorites with just a few clicks. Lets you send a note, table preference or let them know of a special occasion, etc. Pretty handy. Restaurants on Anguilla and St. Barts pop up on the list, so be careful if you check it out and book.

I've also read that La Samanna has quietly joined a few of the "Day Pass" sites, that allow you to book a day resort pass at some of the best resorts in the Caribbean. La Samanna limits the number they sell to just a few so not to impact the staying guests. resortpass.com and resortforaday.com are just two of the sites.