Yup. US Pandora will not run in Mexico (at least it's not done so for me). It gives up a "This service is not available in Mexico." message. Oddly, Serius satellite radio does work, so if you've got that app on your device, you can crank up the Ozzie's Boneyard, or Serius XM Fly, or the 90's channel or whatever. We bought a little stand-alone speaker, about as tall as an Amazon Echo (basically a very stripped down version of that frame), which we can link via bolue tooth from my iPhone to play whatever is playing ont he phone. I, being an idiot, forgot to put MY music on the phone before our last trip, so Serius radio it was the entire time at Pearl. I've fixed that now, and have about 12Gb of tunes in the memory. FYI that speaker gets pretty dang loud, and it only cost about ~$30 USD. Nice thing about it is we'll be able to take it out onto the balcony for music while we're... uh... resting int he hot tub. Yeah, that's it.
They are Bluetooth enabled but I’m sure that’s a pain in the ass to get working. We bring our own and download play lists ahead of time. As John said pandora doesn’t work there.