Thanks for the info so far. I have a Samsung S4 with at&t. Hospice is helping with my mom and said it could be a few weeks but they don't know for sure and I need to be reachable when I am not "under the sea". We are staying at the Park Royal and I have heard that their WiFi is not real good.
At minimum, take the phone, turn data roaming OFF and answer appropriate calls. At worst you pay a few bucks. I always leave my US phone on and just ignore calls from people not worth the per minute price.