We would like to visit Cancun (Westin Lagunamar Resort) and would like to know the best month to visit? We are not limited to any particular time of year as we are retired and can visit anytime. Also, any help you can provide would be appreciated. Is the drinking water still an issue in Mexico? Our last visit was many years ago we were on the complete opposite side of the island. Any advice you can help us with would be very appreciated.