I think that whatever Off Beat becomes (I've heard it will be called "Diversions"), will be a sports bar of sorts. The question of reception is key. They can pull the satellite feed for ABC and the ESPN networks, but not for FOX or CBS (they don't have, or won't pay for, the rights). If they can get these signals via broadcast, then they can show them. So on Sundays at Key West, they pretty much have whatever is airing in south Florida. On the eastern, you can get Sunday night ESPN and Monday night ABC games. If there's a special Thursday ABC or ESPN game, you'll get that, too. As with the NFL, you can only see the ESPN or ABC college games, too.
ESPN is showing the Division series this year for baseball, so you can probably get that. We've been able to watch the Puerto Rican FOX broadcast of MLB playoffs on the eastern when we were near St. Thomas (and as such, near PR). The broadcast is in English, the commercials in Spanish. Apparently Budweiser is "la cerveza offical de las Grandas Ligas."