Then if I were you I would deep six the old phone, purchase a cheap smart phone, and get the smartphone plan I linked above. You Will not be paying any more probably than you do now but will still have the regular talking
minutes but will have the additional ability to check email or do some online surfing using the phone as a hotspot. As long as you have phone service, it doesn't matter if the campground has wifi or not.
I have been doing the exact same thing for many years also using my wifes Tracfone. Finally got tired of paying Verizon for my service and just recently switched my smartphone to Tracfone.
Barney