If you need to print a poster for the conference, there are a couple of convenient options around the Convention Center.
Imprentas Publicas
C. 29 No. 470-x 44, Jesús Carranza, 97109 Mérida,q Yuc., Mexico
You can email your poster with the specifications for printing to publicas@hotmail.com.
Grafficolor
Calle 21 117-x 24, Itzimná, 97100 Mérida, Yuc., Mexico
Slightly further away from the convention center but a good back up option