My entire business revolves around the Internet and the only time Iíve encountered a significant outage in the last 3 years was for 2 days when a satellite outage coincided with the BTL strike.
Power outages and Internet downtime are rare these days. I was down for a few hours the other week because BTL changed server IP's but other than that all has been fine for months.
If both power and back up satellites at the internet cafe's were down you could still run up to Chetumal to get access if you were in dire straits.
Youíll still need a self-employed work permit to telecommute legally.