Parks seem to be the fullest in February, but we have never seen it when
there were not vacancies some where.   The first three years we were down
there the RV section of the park we stayed in was full.  They did have a few
empty mobile home sites that they rented to RVers, but they were just dirt
or when it rained they were mud.  Last year they opened a new section with
213 RV sites.  Without doing additional advertising they expected perhaps 50
of the sites to be in use.  Management was somewhat shocked when 187 sites
were in use last February.  I expect the whole thing will be full this
coming February and perhaps some of January.

If you don't really care what amenities a park has, you will find a place
without a reservation.  If you want the amenities offered by upper end parks
in the Valley, I suggest you get a reservation when coming in January or
February, or you may have to settle for less than you really wanted.

Ron
who winters in Mercedes, TX at an upper end park because we like the
amenities