I do not know Consumer Cellular but there are now many resellers of wireless bandwidth from the "big 3".
There is always a trade off - They all have to do something to resell at a lower price point than the carrier they buy from. That may be scrimping on staffing, service or throttling bandwidth.
to look at carefully is no roaming. They can save costs by not paying roaming fees to other carriers - this a big deal IMO when on the road alot.
I have been looking at this recently and the resellers available at Walmart seem to have good prices. If you look carefully, you can determine the carrier for the particular plan you like. The plans I looked at had no roaming.
I decided to go with Republic Wireless
. Unlimited everything. They resell Sprint, no contract, include roaming and have very good prices. Their tradeoff to lower prices is technology based and I think it is actually a feature for RV'ing.
Republic has only three phones. They are designed place and receive calls over WiFi (when available). The phone automatically uses Sprint for voice and data when no WiFi is available. It can use WiFi at home, at the campground, coffee shops, travel centers etc. This is free calling and reduces what they have to pay to Sprint.
Most campgrounds have Wifi that is good enough to place or receive a call so not matter what, we always will have service there.
You have to buy the phone upfront ($99 phone available in Oct). Their plans run $10/mo, $25/mo or $40/mo depending on the data plan you need. (we are going with the 3G $25 plan).
(FWIW - I absolutely avoid anything that AARP offers)