I've just booked a trip here for July 2010

(so far away!), and have never stayed in the caribbean before. I was just wondering if anyone could enlighten me a bit about the all inclusive. What do they mean by 'international branded drinks'? Also, i have read that you can book to eat in the a-la-carte resteraunts, but whenever ive tried this before, it has been such a pain to do, i haven't bothered. Is this the case here?
thanks for your advice in advance!