What works for us is a hot spot from AT&T. Bought at Best Buy for $50.00. Costs us $25.00 for 3gigs and is good for 30 days. We buy the card at Walmart when traveling then let it shut down after 30 days. Reactivate as needed. Gives us wi-fi for our tablets while traveling. We don't have smart phones. No monthly fees.
We also have an outdate Good Sam book. Use it some.