Last time we cleared in to St. Martin (about 1 year ago) we initially went to Marina Fort Louis as that is where we had cleared in on prior trips. As Mike said, they no longer will help unless you are a marina guest. We went all over looking for a C&I office but couldn't find any where we expected them to be. Eventually we discovered that the nearest port clearance is at Island Water World which is a chandlery about 1/2 mile south. They have a computer set up where you can enter all of your crew info. First time we went they were on lunch. We returned later, shortly before close and I was able to clear my crew of nine in. They were helpful and stayed a few minutes after close for me, but were obviously ready to get out of there.