I'm not expert, but usually if you buy the AI, you have to buy it for everyone in your party for the whole stay. Sometimes owners get a discount, but at the other Mexican resorts the AI is quite high - in my opinion.
I checked the rental rates and it didn't seem bad at all. I checked a random week in May and it was $166 per night for a studio, all inclusive. With rates like that, why buy there or even exchange in?
Breakfast, Lunch & Dinner. Alcoholic and Non Alcoholic Drinks
Kids under 4 eat free, Kids 5-12 receive 50% off
Internet & Westin Workout free access!