DW and I are planning our first extended winter escape. We would like to meander from Charlotte NC. after visiting our kids at Christmas, to south Texas or even AZ. over 8 - 10 weeks. How difficult will this be without making reservations now. I really don't want any kind of a schedule but after reading this and other forums it sounds like reservations are almost mandatory to find a place to set up.
Winter time in the south west states are popular for "Snow Birders" who tend to stay 3 to 5 months in one park because of the warmer weather. This results in many of the parks tending to fill up. While not impossible to make the trip without reservations, be prepared to accept some problems in getting an RV site or worst having to travel around to find another RV park.
IMHO, making tentative reservation plans for an RV trip does not by definition "lock" you into a schedule because you call always call and cancel a reservation. Just be sure you ask what the cancellation policy is for each RV park.
In some ways it is like rolling dice on the ******tables in Las Vegas, you just have to figure out what your tolerance is for rolling the dice before crapping out:)