Me and babygirl are heading to Negril for our first time sept. 22nd, we're pretty excited to go!

i was searching the forums for cell phone information and found a little bit, it seems like you all get sim cards when in jamaica.
I called att and they said i could just add to my plan for international use. is it better to upgrade with my carrier or just get a sim in jamaica?

do you guys bring your nice phones down there like iphones and stuff or just bring down an old beater phone?