When you fly first class internationally, AA will give you a day pass to the Admirals Club, even if you're not a member - but you need to ask. The last time that we flew back into CLT from out of the country, the pass even included 2 free premium drinks each.

If there is no Admirals Club in a particular airport that AA flys to / from, they will give you a pass to the airport's VIP lounge - at least that's how it's worked for us in Europe, don't know about SXM, but we will inquire when we fly there end of year.