My US provider is CDMA (Sprint) though if Vz works down there mine should too, since Vz is a Spring roaming partner. Looks like my best bet is to wait until I get there and see. If I need something I'll grab a rental or just buy a local prepaid.
Thanks everyone for your replies.
Bellerophon, 46' staysail ketch
"England expects that every man will do his duty."