If you have a 3G cellphone, you can often tether your computer to your phone
. It usually takes a little additional software
if you have a standard phone
, but it's a built-in function to most blackberries. You can also do it with the iPhone
, but you have to jailbreak it as AT&T hasn't delivered an official tethering plan yet.
You can also get netbooks for about $200 that cost around $40 a month for an unlimited 3G data plan that allows you to surf the web anywhere you get cell phone reception
This would give you Internet anywhere you get a phone signal, not just where there is wifi available. Of course, neither a cell phone
nor a netbook with data plan are free.
More and more cafes and shopping
centers have wifi, so if you can't find it in the marina, you wouldn't have to go far to find someplace on shore. There's Starbucks everywhere, and their wifi always works, but it's only free if you have AT&T -- which goes back to the cost of a cell phone with a data plan.
And if you're going International, make sure you pay for the International Data plan as it is FAR cheaper than the ridiculous price
carriers charge for international data roaming. The upside is, you can turn it on and off when you know you're leaving the country, so you don't have to pay for it all the time.