I received a New Ipad Mini 32gb with WIFI Only as a gift, Is it possible to exchange it for one with 3G and WiFi

There is the no questioned ask 14/15 day return policy with apple stores. Ask the person who gifted it to you.

Other than that there is MiFi.

I recently signed up for FreedomPop.com. http://www.freedompop.com

FreedomPop provides 500meg of free 4g cellular data per month! You do need to buy their wireless device at $39. There are ways of getting bonus megs. One gig of addition data costs $10 per month. I used about 15megs per hour of lite internet surfing.

When signing up, you need to be careful with your selections. On some screens, the free option is a small link below the large button. FreedomPop employs a Pavlovian Dog < Operant conditioning > thing of getting you used to clicking on the large button then they change the large button to a paid add-on.

Once you setup your account, you need to go to your account options screen to turn off automatic paid data download once you exceed your quota.

The performance seems a little slower than my DSL connection.

http://www.freedompop.com/offers.htm?experience=organic.default

http://www.freedompop.com/coverage

Get it before they go broke.

Robert