Data Calls via your cell phone are bound to be slooooow unless you have a specific hi-speed data plan or option you can sign up for. The slow type connection may be fine for just reading emails, but if you're going to be surfing the web, you may need a higher speed plan to make it workable for you.

What I would suggest is going to this site:

http://www.jiwire.com/search-hotspot-locations.htm

...and plug in the Zip Code where you're staying and select the "free" button and do a Search for any free Wi-Fi locations in your area. If you find an acceptable hotel lobby, library, coffee shop, restaurant, bar or pub that offers free Wi-Fi, then consider investing in a cheapie Wi-Fi card for your laptop and go to those locations to do your surfing.

Many McDonalds also offer Wi-Fi for $2.99 for 2 hours. see:

http://www.mcdonalds.com/wireless.html

Some McDonalds even have unofficial Wi-Fi for free on their own franchise's unsecured network.

Good Luck!