Galaxy Tablet and SIM card or pay-as-you-go for internet?

[disneydreamgirl]

I'm going to bring our Galaxy tablet to Orlando with us in May and I'm wondering about cheaper options for internet as the hotel we are staying at charges by the day. Has anyone bought a pay-as-you-go type of card for internet access? Not even sure what the options are here as we've really only used it at home with our wireless access or during the occasional Starbucks visit in town. I'm hoping there is something we could buy once there at Target or WalMart that might work for us...thanks in advance for any suggestions offered! (Edit: I tried to glean what I could from the cell phone sticky...also adding that I'm a bit technologically challenged in the cellphone/tablet area, so appreciate any help!!!)