I find going over to Anguilla for just one day is a waste of time and money. There is a lot to do and see there and you really need to spend a few days there to really enjoy the island. I would suggest you spend your 10 days enjoying ST. MAARTEN/ ST. MARTIN and plan on spending few days on Anguilla on another trip. I always loved my week on Anguilla for pure relaxation, fabulous beaches and good music and amazing restaurants.