The on-line registration is now available for the Cancun meeting.
The full technical program can be read on the Cancun NAM website- click on any session number in the table of week-long symposia.
Note there are two registration entries to fill in: the hotel and the meeting. You will need a credit card for both, although the hotel charge will not be made to your credit card unless you don’t cancel in time.
Register on-line at http://www.18nam.org.
Cancun is a popular vacation resort, so you should make your airline reservations early in order to get the lowest fares. Flights on American carriers are sold on the basis of seat availability. As the plane fills up, the seats get more and more expensive. [My seat, purchased last month was ~$600. from Philadelphia, a month later it is now twice that.] Shop around and be flexible on dates in order to get the best airfare.
From the East Coast of the USA there are non-stops on US Airways (from PHL), on Continental (from Newark), and on United (from Miami). American Airlines and Northwest also fly into Cancun. Many travel agencies run group flights and sometimes these can be quite cheap.