Most Versatile Discount on State Parks and MiFi Question

For a cell based WiFi hotspot for intermittent use, take a look at Straight Talk's Verizon based hotspot available at Walmart for about $80. You can buy bandwidth in 1GB increments for as little as $10/GB (4GB & 5GB cards) as needed either at the store or online. The 1 & 2GB cards are good for 30 days, and the 4,5, & 7GB cards are good for 60 days.