A valid passport with 6 months of bank statements updated with a validation along with 2 photographs. Other details such as adhaar - card, pan card etc are necessary to be filled in the form for eligibility criteria.
There should be the availability of double tickets for the members who are going to travel.
People who are suffering from any kind of health issue should have a proper doctor's prescription in which he \ she is prescribed to travel to a foreign country in between the medication.
When you arrive at Saint Lucia airport you should have your biometric - information available with you because your biometric will check for your confirmation about yourself
If any person marked eligible with all the above steps followed properly they are accepted as a traveler to Saint Lucia and apply for a Saint Lucia visa and in any case of visa issues, the visits visa is responsible for them during the visa extension.