Which church? The one in Marigot? St Martin of Tours' on rue du Fort Louis?
When you say volunteering, what are you looking to do per se? Spend time, money, use skills? I know of several places you could help in any number of ways on the French AND Dutch sides. There is a garden project in Marigot at the 4 (3?) rotaries that will need planting and upkeep. That's just one example of a level of effort.
"It is good to do nothing all day, and then to rest"
